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Copyright Resource Guide: Plagiarism

Detecting Plagiarism


Useful site for instructors and students to prevent the spread of Internet plagiarism.

How to Recognize Plagiarism

Created by the School of Education at Indiana University.

Avoiding Plagiarism

Purdue University's Online Writing Lab.

From the Office of Research Integrity, U.S. Department of Health & Human Services

Avoiding plagiarism, self-plagiarism, and other questionable writing practices: A guide to ethical writing.

What is Plagiarism?

"To use another person's ideas or expressions in your writing without acknowledging the source is to plagiarize.  Plagiarism, then, constitutes intellectual theft."  MLA Handbook for Writers of Research Papers, 5th ed

“An act or instance of using or closely imitating the language and thoughts of another author without authorization and the representation of that author's work as one's own, as by not crediting the original author." Retrieved September 5, 2012, from

Ignorance does not excuse plagiarim. 

Types of plagiarism


  • Mixing words or ideas from an unacknowledged source with your own words or ideas.
  • Mixing uncited words and ideas from several sources into a single work.
  • Mixing cited uses of a source with uncited uses.

Direct Plagiarism

  • A phrase or passage that is copied word for word, but not quoted.


  • Rephrasing another person’s work and inserting into your own work without acknowledging the original source.

Insufficient Acknowledgement

  • Half crediting source; whereby you acknowledge the author’s work the first time, but continue to use the author’s words without giving additional attribution.

From -- Retrieved September 5, 2012