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Whenever you use sources such as books, journals, or Web sites in your research papers you must give credit to the original author by properly citing the sources. Citations also help your reader find the sources again. There are a number of different citation styles, depending on the discipline in which you are working. The following links provide guidelines to using a variety of citation styles, as well as information on writing and plagiarism.

Citation Style Guides (APA, MLA, Chicago, CSE)

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Citation Managers

  • Refworks
    Web-based Refworks is a complete citation management tool available to Penn State Users.
  • EndNote
    Endnote is a comprehensive citation management tool, helping users easily search for, organize and cite bibliographic information.  Endnote is primarily available as a Mac/Win application.
  • Zotero
    Zotero is a free Firefox extension that helps you collect, manage, and cite your research sources.
  • KnightCite Bibliography Composer (MLA, APA, Chicago)
    KnightCite is an online citation generator. Choose from MLA, APA, and Chicago citation styles.
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Other Citation Style Guides

Resources for Preventing Plagiarism

  • Plagiarism & You - University Libraries/Library Learning Services
    This interactive tutorial will show you how to use information correctly without plagiarizing. You will learn how to recognize plagiarism, and how to tell the difference between plagiarism and appropriate use of information in research papers.

  • A Statement on Plagiarism and Academic Integrity - Penn State University
    Learn what plagiarism and academic integrity mean to you as a Penn State student. This page also discusses penalties for plagiarism at Penn State.

  • Teaching and Learning With Technology - Plagiarism Prevention Resources
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Writing Guides

  • Elements of Style (W. Strunk Jr.)
    Respected reference work on the principal requirements of plain English style. Concentrates on the rules of usage and principles of composition most commonly violated.
  • The St. Martin's Handbook (5th edition)
    Comprehensive advice on the writing process, including questions, exercises, and a quick guide to the most common writing errors.
  • Grammar, Punctuation and Spelling  (Purdue University Online Writing Lab)
    Printable handouts on the basics of writing correctly
  • Style for Students Online - new guide by Joe Schall (Giles Writer-in-Residence for the College of Earth and Mineral Sciences at Penn State from 1988 until 2008)
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