Cita APA (7a ed.)

Bramwell, A. (1989). Ecology in the 20th century: A history. Yale University Press.

Cita Chicago Style (17a ed.)

Bramwell, Anna. Ecology in the 20th Century: A History. New Haven: Yale University Press, 1989.

Cita MLA (9a ed.)

Bramwell, Anna. Ecology in the 20th Century: A History. Yale University Press, 1989.