Dyfyniad APA

(1998). Encyclopedia of birds: The comprehensive illustrated guide by international experts. San Diego, CA: Academic Press.

Dyfyniad Arddull Chicago

Encyclopedia of Birds: The Comprehensive Illustrated Guide By International Experts. San Diego, CA: Academic Press, 1998.

Dyfyniad MLA

Encyclopedia of Birds: The Comprehensive Illustrated Guide By International Experts. San Diego, CA: Academic Press, 1998.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.