Michael Walters. (1994). Birds' egges: The visual guide to the eggs of over 500 bird species from around the world. New York: Dorling Kindersley.
استشهاد بنمط شيكاغوMichael Walters. Birds' Egges: The Visual Guide to the Eggs of Over 500 Bird Species From Around the World. New York: Dorling Kindersley, 1994.
MLA استشهادMichael Walters. Birds' Egges: The Visual Guide to the Eggs of Over 500 Bird Species From Around the World. New York: Dorling Kindersley, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.