APA (7e ed.) Bronvermelding

Klein, R. M. (1987). The Green World: An Introduction to Plants and People (2nd ed.). Harper & Row.

Chicago (17e ed.) Bronvermelding

Klein, Richard M. The Green World: An Introduction to Plants and People. 2nd ed. New York: Harper & Row, 1987.

MLA (9e ed.) Bronvermelding

Klein, Richard M. The Green World: An Introduction to Plants and People. 2nd ed. Harper & Row, 1987.