APA-referens (7:e uppl.)

Wolf Tony. (2009). The book of Habitats, many questions and many answers. Euro Books.

Chicago-referens (17:e uppl.)

Wolf Tony. The Book of Habitats, Many Questions and Many Answers. Mumbai: Euro Books, 2009.

MLA-referens (9:e uppl.)

Wolf Tony. The Book of Habitats, Many Questions and Many Answers. Euro Books, 2009.