APA-referens (7:e uppl.)

Cohen, J. E. (1995). How many people can the earth support? Norton.

Chicago-referens (17:e uppl.)

Cohen, Joel E. How Many People Can the Earth Support? New York: Norton, 1995.

MLA-referens (8:e uppl.)

Cohen, Joel E. How Many People Can the Earth Support? Norton, 1995.