APA (7e ed.) Bronvermelding

Symposium on Population Pressures upon Physical and Social Resources in the Developing Lands, Pennsylvania State University, Kosiński, L. A., Prothero, R. M., & Zelinsky, W. (1970). Geography and a crowding world. Oxford University Press.

Chicago (17e ed.) Bronvermelding

Symposium on Population Pressures upon Physical and Social Resources in the Developing Lands, Pennsylvania State University, Leszek A. Kosiński, R. Mansell Prothero, en Wilbur Zelinsky. Geography and a Crowding World. New York: Oxford University Press, 1970.

MLA (9e ed.) Bronvermelding

Symposium on Population Pressures upon Physical and Social Resources in the Developing Lands, Pennsylvania State University, et al. Geography and a Crowding World. Oxford University Press, 1970.