APA

Cronon W. J., Mcdonnell M. J. & Pickett S. T. (1993). Humans as components of ecosystems. New York: Springer.

Chicago

Cronon William J, Mcdonnell Mark J and Pickett Steward T. 1993. Humans as components of ecosystems. New York: Springer.

Harvard

Cronon W. J., Mcdonnell M. J. and Pickett S. T. (1993). Humans as components of ecosystems. New York: Springer.

MLA

Cronon William J, Mcdonnell Mark J and Pickett Steward T. Humans as components of ecosystems. New York: Springer. 1993.