A systematic classification for the birds of the world
MLA
Wetmore, Alexander. A Systematic Classification for the Birds of the World. Washington: Smithsonian Institution, 1934
APA, 7th edition
Wetmore, A. (1934). A systematic classification for the birds of the world. Washington: Smithsonian Institution
Chicago, 17th edition
Wetmore, Alexander. A systematic classification for the birds of the world. Washington: Smithsonian Institution, 1934