Gaya APA

Dkk, D, F, E, M. (2004). WORLD BOOK'S CHILDCRAFT: SHAPES AND NUMBERS (12). USA: World Book, Inc..

Gaya MLA

Dkk, David, Fraizer,, Eileen, Mueller,. "WORLD BOOK'S CHILDCRAFT: SHAPES AND NUMBERS". 12 USA: World Book, Inc., 2004. Text.