APA (7th ed.) Citation

Bastable, C. F., & Gregory, T. E. (1923). The commerce of nations (9th ed.). Methuen & Co.

Chicago Style (17th ed.) Citation

Bastable, C. F., and T. E. Gregory. The Commerce of Nations. 9th ed. London: Methuen & Co, 1923.

MLA (9th ed.) Citation

Bastable, C. F., and T. E. Gregory. The Commerce of Nations. 9th ed. Methuen & Co, 1923.