Michael Walters. (1994). Birds' egges: The visual guide to the eggs of over 500 bird species from around the world. New York: Dorling Kindersley.
শিকাগো স্টাইলে সাইটেশনMichael Walters. Birds' Egges: The Visual Guide to the Eggs of Over 500 Bird Species From Around the World. New York: Dorling Kindersley, 1994.
এমএলএ সাইটেশনMichael Walters. Birds' Egges: The Visual Guide to the Eggs of Over 500 Bird Species From Around the World. New York: Dorling Kindersley, 1994.
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