APA (7e ed.) Bronvermelding

Johnston, R. J. (1976). The world trade system: Some enquiries into its spatial structure. St. Martin's Press.

Chicago (17e ed.) Bronvermelding

Johnston, Ronald John. The World Trade System: Some Enquiries into Its Spatial Structure. New York: St. Martin's Press, 1976.

MLA (9e ed.) Bronvermelding

Johnston, Ronald John. The World Trade System: Some Enquiries into Its Spatial Structure. St. Martin's Press, 1976.