APA-referens

(2010). The environment encyclopedia and directory 2010 (5th ed.). Routledge.

Chicago-stil citat

The Environment Encyclopedia and Directory 2010. 5th ed. Singer street, London: Routledge, 2010.

MLA-referens

The Environment Encyclopedia and Directory 2010. 5th ed. Routledge, 2010.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.