APA (7th ed.) Citation

National Zoological Park (U.S.), Meyer, A., & Crosby, T. (1979). A Zoo for all seasons: The Smithsonian animal world. Smithsonian Exposition Books.

Chicago Style (17th ed.) Citation

National Zoological Park (U.S.), Alfred Meyer, and Thomas Crosby. A Zoo for All Seasons: The Smithsonian Animal World. [Washington, D.C.]: Smithsonian Exposition Books, 1979.

MLA (9th ed.) Citation

National Zoological Park (U.S.), et al. A Zoo for All Seasons: The Smithsonian Animal World. Smithsonian Exposition Books, 1979.