Gaya APA

Dkk, F, K, E, M, N. (2004). WORLD BOOK'S CHILDCRAFT: THE UNIVERSE (12). USA: World Book, Inc..

Gaya MLA

Dkk, Franz, Kohlauf,, Eileen, Mueller, Neil. "WORLD BOOK'S CHILDCRAFT: THE UNIVERSE". 12 USA: World Book, Inc., 2004. Text.