Gaya APA

Greenwood, N, H., Edwards, J. (1973). Human Environments and Natural Systems a Conflict of Dominion (Ed.1). California: Duxbury Press.

Gaya MLA

Greenwood, Ned, H.., Edwards, J.M.B. "Human Environments and Natural Systems a Conflict of Dominion". Ed.1 California: Duxbury Press, 1973. Text.