Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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