APA (7th ed.) Citation

Vander Ark, S. (2009). The Lexicon: An unauthorized guide to Harry Potter fiction and related materials. RDR Books.

Chicago Style (17th ed.) Citation

Vander Ark, Steve. The Lexicon: An Unauthorized Guide to Harry Potter Fiction and Related Materials. Muskegon, Mich.: RDR Books, 2009.

MLA (9th ed.) Citation

Vander Ark, Steve. The Lexicon: An Unauthorized Guide to Harry Potter Fiction and Related Materials. RDR Books, 2009.

Warning: These citations may not always be 100% accurate.