Answer:
Explanation:
False.
In a formal report, you must cite every source you found useful -- I would say especially your class text.
If you found out something from a comic book, and it was needed like Gotham City was really New York, the that comic must be treated as a book and put in your Bibliography.
Movies count.
Government letters count that show your tax returns are used if you need the fact.
I cannot think of anything that should be excluded if you need a fact that that document provides.
