Citazione Stile APA (7a Edizione)

McDonnell, M. J., & Pickett, S. T. A. (1993). Humans as components of ecosystems: The ecology of subtle human effects and populated areas. Springer.

Citazione stile Chigago Style (17a edizione)

McDonnell, Mark J., e Steward T. A. Pickett. Humans as Components of Ecosystems: The Ecology of Subtle Human Effects and Populated Areas. New York, USA: Springer, 1993.

Citatione MLA (9a ed.)

McDonnell, Mark J., e Steward T. A. Pickett. Humans as Components of Ecosystems: The Ecology of Subtle Human Effects and Populated Areas. Springer, 1993.