APA Alıntı

Eckholm, E. P. (1982). Down to earth: Environment and human needs. Norton.

Chicago Stili Alıntı

Eckholm, Erik P. Down to Earth: Environment and Human Needs. New York: Norton, 1982.

MLA Alıntı

Eckholm, Erik P. Down to Earth: Environment and Human Needs. Norton, 1982.