Style de citation APA (7e éd.)

GREENWOOD, N., & EDWARDS, J. (1979). Human environments and natural systems. -- 2nd ed. Duxbury Press.

Style de citation Chicago (17e éd.)

GREENWOOD, N.H, et J.M.B EDWARDS. Human Environments and Natural Systems. -- 2nd Ed. North Scituate: Duxbury Press, 1979.

Style de citation MLA (9e éd.)

GREENWOOD, N.H, et J.M.B EDWARDS. Human Environments and Natural Systems. -- 2nd Ed. Duxbury Press, 1979.