APA-Zitierstil (7. Ausg.)

(1997). Bears: Polar bears, black bears and grizzly bears (1. US ed.). Kids Can Press.

Chicago-Zitierstil (17. Ausg.)

Bears: Polar Bears, Black Bears and Grizzly Bears. 1. US ed. Buffalo, NY [u.a.]: Kids Can Press, 1997.

MLA-Zitierstil (9. Ausg.)

Bears: Polar Bears, Black Bears and Grizzly Bears. 1. US ed. Kids Can Press, 1997.