At the Institute for Archaeology and Ancient history we use two different systems for referencing: The Harvard system and the Guidelines for contributors used at the Swedish institutes in Rome and Athens. Your teacher will tell you which to use.
An online resource for academic writing in English at Lund University. Covers the Writing process, Grammar & Words, Sources & Referencing and Academic Integrity. For anyone who needs help writing in English.
Johnson, Tom (2004). How to Write an Essay: 10 Easy Steps
Advice on Academic Writing från University of Toronto