It is appropriate to use sources whenever you want to gather information and ideas. It is important to differentiate your sources for the following reasons: To satisfy the expectations of the academic community you are writing for, To show evidence of wide, informed and relevant reading,To show that your writing does not rely mainly on personal opinion:4. To show the process by which you have arrived at your own conclusions about the topic, and to enable the reader to understand and evaluate the ideas and information you are presenting and of course to avoid plagiarism: