APA-referens

(1976). Purnell's find out about wonders of the world. Purnell Books.

Chicago-stil citat

Purnell's Find Out About Wonders of the World. Maidenhead: Purnell Books, 1976.

MLA-referens

Purnell's Find Out About Wonders of the World. Purnell Books, 1976.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.