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How to Cite Sources in Your Research Paper: National Library of Medicine (NLM)

A guide on how to cite your sources and avoid plagiarism

NLM: an Introduction

Originally published in print by the National Library of Medicine as National Library of Medicine Recommended Formats for Bibliographic Citation, it is now published online as Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers. The intention of the guide is not to "create a new bibliographic standard with this publication, but rather to apply existing standards to complex biomedical material."

This approximately 1,000-page document is available for free download.