Take this tutorial to improve your concept of plagiarism.
Incorrect citing results in plagiarism. With citation managers, you can create a database of citations, organize them, create a bibliography, insert citations as you type your paper, and much more. These are the two supported by the WVU Libraries
Mendeley is a free online service that allows you to index and organize your PDF documents, collaborate with fellow researchers and share information via shared and public collections, and discover new research through the Mendeley research network. You can also create reference lists and bibliographies in Word (Windows only) or OpenOffice (all platforms).