Use the Senior level of the Online Reference Generator to create bibliographic references in the correct format. If you are using the Online Generator from home you will need the password. Make sure you know the password before you leave the library today; ask your teacher or the teacher librarian!
When completing assignments or essays in history you will be expected to refer in your writing to to the resources you have used. The style you use for this is set out in "Documentation of Sources:a guide for secondary students". A copy of this document is available here.