Publication manual of the American Psychological Association: the official guide to APA style by The APA Publication Manual is the style manual of choice for writers, researchers, editors, students, and educators in the social and behavioral sciences, natural sciences, nursing, communications, education, business, engineering, and other fields. The Pace Libraries own several copies of the new APA manual as well as the previous editions. Check with your professor to confirm whether the 7th edition or the 6th edition should be consulted.
MLA Handbook, 9th edition by 
MLA Style Manual and Guide to Scholarly Publishing (3rd Ed.) by MLA style is used mostly by students of the humanities, particularly English, comparative literature, and the performing arts. MLA puts out two publications, each of which cover more or less the same material, but with slightly different emphases. The MLA Style Manual is geared more towards graduate students and faculty. The MLA Handbook, more well known, is usually the choice for undergraduates.
The Chicago Manual of Style by http://www.chicagomanualofstyle.org/home.html
Kate Turabian's Manual for Writers of Research Papers, Theses, and Dissertations (below) is the student version of the CMS.
A Manual for Writers of Research Papers, Theses, and Dissertations by 
AMA MANUAL of STYLE, 11th EDITION by
The AMA Manual of Style is a must-have resource for anyone involved in medical, health, and scientific publishing. Written by an expert committee of JAMA Network editors, this latest edition addresses issues that face authors, editors, and publishers in the digital age. Extensive updates are included in the References chapter, with examples of how to cite digital publications, preprints, databases, data repositories, podcasts, apps and interactive games, and social media. Full-color examples grace the chapter on data display, with newer types of graphic presentations and updated guidance on formatting tables and figures. The manual thoroughly covers ethical and legal issues such as authorship, conflicts of interest, scientific misconduct, intellectual property, open access and public access, and corrections. The Usage chapter has been revised to bring the manual up-to-date on word choice, especially in writing about individuals with diseases or conditions and from various socioeconomic, racial/ethnic, and sexual orientation populations. Specific nomenclature entries in many disciplines are presented to guide users in issues of diction, formatting, and preferred terminology. Guidance on numbers, SI units, and math has been updated, and the section on statistics and study design has undergone a major expansion. In sum, the answer to nearly any issue facing a writer or editor in medicine, health care, and related disciplines can be found in the 11th edition of the AMA Manual of Style.
The 11h edition of the AMA Manual of Style is on reserve at Beekman and in the Reference collection at Mortola.
AMA is an author-number style, which means a number is placed in the text to correspond to the author name(s) in the reference list, which are listed numerically in order of appearance. A Guide to Citing the AMA Manual of Style is available online.
The International Committee of Medical Journal Editors (ICMJE) offers guidance to authors in its publication Recommendations for the Conduct, Reporting, Editing and Publication of Scholarly Work in Medical Journals (ICMJE Recommendations). A list of journals that follow the ICMJE recommendations is here.
The ICMJE no longer publishes a list of reference formats, but instead recommends that authors follow the ANSI standard style adapted by the National Library of Medicine (NLM) for its databases. For samples of reference citation formats, authors should consult NLM’s Citing Medicine, 2nd edition: the NLM Style Guide for Authors, Editors, and Publishers," which was published in 2007 and updated in 2015.
The Associated Press Stylebook 2018 by 
The ACS Style Guide (3rd Ed.) by Publishing in the field of physics is not guided by a particular style guide at this time. Ask your professor what style to follow.
Scientific Style and Format: The CSE Manual for Authors, Editors, and Publishers (8th Ed.) by The Writing Center at the University of Wisconsin (Madison) has an excellent CSE help page.
