APA

Price J., Droege S. & Price A. (1995). The summer atlas of north american birds. New York: Academic Press.

Chicago

Price Jeff, Droege Sam and Price Amy. 1995. The summer atlas of north american birds. New York: Academic Press.

Harvard

Price J., Droege S. and Price A. (1995). The summer atlas of north american birds. New York: Academic Press.

MLA

Price Jeff, Droege Sam and Price Amy. The summer atlas of north american birds. New York: Academic Press. 1995.