Cita APA (7a ed.)

Cohen, J. E. (1996). How many people can the earth support? (1st published as a Norton paperback.). W.W. Norton.

Cita Chicago Style (17a ed.)

Cohen, Joel E. How Many People Can the Earth Support? 1st published as a Norton paperback. New York [etc.]: W.W. Norton, 1996.

Cita MLA (9a ed.)

Cohen, Joel E. How Many People Can the Earth Support? 1st published as a Norton paperback. W.W. Norton, 1996.