If you have questions about the appropriateness of a source, come see me. Minimize the use of internet sources. While books, newspapers, journal articles, etc. It is important that you cite all sources of information you use. Any idea or piece of information that is not your own you must cite in the text.
Some people choose to cite sources in footnotes, while others use a parenthetic phrase in the text.
The parenthetic phrase alerts the reader that this statement originated in another work. The full citation would be listed in the reference section. An important purpose of citing sources is so that the reader can check your facts. Make it easy for the reader to do so.