The exclusive legal right to reproduce, publish, sell, or distribute the matter and form of something (such as a literary, musical, or artistic work)
Using someone's thoughts, words, or work as your own.
Any copying of copyrighted material done for a limited and “transformative” purpose, such as to comment upon, criticize, or parody a copyrighted work. Such uses can be done without permission from the copyright owner
The following are sites that will help you cite the copyrighted content that you choose to hlep you with your work. By giving the owner of the material credit for their work you can prevent Plagiarism.
APA - This style is used in the fields of Education, Psychology, and the Sciences.
MLA - This style is used in the field of Humanites (philosophy; archaeology; comparative religion; ethics; etc.)
Chicago-Turabian Style - This style is used in the fields of Business, History, and Fine Arts.
Below are links that will help you understand copyright laws.
Information on how to avoid Plagiarism
Online Plagiarism checkers