For instance, if you were making a documentary on something like depression disorder or Alzheimer's disease, would you have to cite the facts that you presented in the film at the end of the movie (like in the credits) the same way you would do on the works cited page at the end of a research paper for a class? I'm in the process of trying to make a documentary (not on depression o Alzheimer's) and would like to discuss facts that I will be getting out of a book, but would like to steer clear of legal trouble. Do I need the author of the book's permission to even include information in my film? Do authors own information? Essentially they must have gotten the facts from someone else, and so on. Any helps or tips would be GREATLY appreciated!