APA

Cohen Saul Bernard, . (1973). Geography and politics in a world divided. New York: Oxford University Press.

Chicago

Cohen Saul Bernard, . 1973. Geography and politics in a world divided. New York: Oxford University Press.

Harvard

Cohen Saul Bernard, . (1973). Geography and politics in a world divided. New York: Oxford University Press.

MLA

Cohen Saul Bernard, . Geography and politics in a world divided. New York: Oxford University Press. 1973.