APA

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

Chicago

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

Harvard

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

MLA

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