Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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