Plagiarism is the act of taking another person's writing, conversation, song, or even idea and passing it off as your own.
This includes information from web pages, books, songs, television shows, email messages, interviews, articles, artworks or any other medium. Whenever you paraphrase, summarize, or take words, phrases, or sentences from another person's work, it is necessary to indicate the source of the information within your paper using an internal citation. It is not enough to just list the source in a bibliography at the end of your paper. Failing to properly quote, cite or acknowledge someone else's words or ideas with an internal citation is plagiarism.
A Works Cited page, also known as a bibliography or reference list, comes at the end of your paper listing all the works (books, articles, Internet sites, etc.) you've quoted, paraphrased or otherwise used to create your paper.
"Taking something from one man and making it worse is plagiarism." - George A. Moore quotes from BrainyQuote.com