Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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