APA (7th ed.) Citation

Whittaker, R. H. (1977). Classification of natural communities. Arno Press.

Chicago Style (17th ed.) Citation

Whittaker, Robert H. Classification of Natural Communities. New York: Arno Press, 1977.

MLA (9th ed.) Citation

Whittaker, Robert H. Classification of Natural Communities. Arno Press, 1977.