Gaya APA
Greenwood, N, H., Edwards, J. (1973).
Human Environments and Natural Systems : A Conflict of Dominion .
Massachusetts:
Duxbury Press.
Gaya MLA
Greenwood, Ned, H.., Edwards, J.M.B.
"Human Environments and Natural Systems : A Conflict of Dominion".
Massachusetts:
Duxbury Press,
1973.
Text.