APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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