Bologna, G., & Bull, J. (1990). Guide to birds of the world. New York: Simon and Schiuster's.
Chicago Style CitationBologna, Gianfranco, and John Bull. Guide to Birds of the World. New York: Simon and Schiuster's, 1990.
MLA CitationBologna, Gianfranco, and John Bull. Guide to Birds of the World. New York: Simon and Schiuster's, 1990.
Warning: These citations may not always be 100% accurate.