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CELOP Library Research (STEM)

Purdue OWL (Online Writing Lab)

The Online Writing Lab (OWL) at Purdue University houses writing resources and instructional material, and we provide these as a free service of the Writing Lab at Purdue. Students, members of the community, and users worldwide will find information to assist with many writing projects.

Citing Your Sources

Proper citation is an essential aspect of scholarship. Citing properly allows your reader or audience to locate the materials you have used. Most importantly, citations give credit to the authors of quoted or consulted information.

For detailed instructions on how to cite within the text of your paper, please consult a style manual listed below. Please also note: some of the resources below do not cover every possibility you might encounter when trying to cite your sources. For this reason, it is suggested that you consult a style manual to create your bibliography.

BU Librarians often recommend refworks RefWorks as the best tool to manage citations. Accounts are free for the BU community, and most importantly RefWorks can automatically create a bibliography in hundreds of styles.

Here are some easy web options.

CSE (Council of Science Editors) Style

Scientific Style and Format

Quick Guide

Citing Your Sources: CSE (Council of Science Editors) Style
Style Manual Committee, Council of Science Editors.
8th ed. Cambridge University Press, 2014
Location: Science & Engineering Library T11.S386 2014 

See Chapter 30: Citations and References pages 617-676 
Citing electronic sources pages 665-669

Chicago Style


A Student's guide to writing college papers 4th ed. rev., 2010 
by Gregory G. Colomb, Joseph M. Williams, and the University of Chicago Press
editorial staff. Turabian, Kate; Colomb, Gregory G; Williams, Joseph M.

MLA (Modern Language Association) Style

APA (American Psychological Association) Style