Citazione Stile APA (7a Edizione)

ZELINSKY, W. (1970). Geography and a crowding world: A symposium on population pressures upon physical and social resources in the developing lands. O.U.P.

Citazione stile Chigago Style (17a edizione)

ZELINSKY, Wilbur. Geography and a Crowding World: A Symposium on Population Pressures upon Physical and Social Resources in the Developing Lands. New York: O.U.P, 1970.

Citatione MLA (9a ed.)

ZELINSKY, Wilbur. Geography and a Crowding World: A Symposium on Population Pressures upon Physical and Social Resources in the Developing Lands. O.U.P, 1970.