It is NOT a good source, however, to use in the body of your paper. For example, if you are doing a report on the Vietnam War and you have a friend or relative who served, you might want to interview them. Video tapes and other media may also be appropriate sources for some topics. List your major points and then indicate which sources will support those points. View a professionally written example term paper illustrating this technique.
Every good paper begins with a thesis statement.
A thesis is simply the concept or idea or approach which your paper will prove through the use of solid research sources. A common mistake is to simply end your paper when you run out of sources and ideas. A good conclusion restates your thesis, and summarizes the main points and arguments you made to support it. Most other formats are simply adapatations of those two. Your library will have copies of the APA and MLA manuals, and you may also go to the MLA and APA websites for information.