This is a great tool to use as a review for students or helps struggling students with the different forms of bibliographic citations. It has guided correct forms on the back side and asks for original citations on the front. This is a one hour lesson designed to be done in the library with access to books, newspapers, magazines and online internet news articles. Would be good for a sub as well. I've used it several years in a row now and always find it helpful - especially right before testing.