APA (7th ed.) Citation

Bartlett, C. J. (1989). British foreign policy in the twentieth century (1. publ. in the USA.). St. Martin's Pr.

Chicago Style (17th ed.) Citation

Bartlett, C. J. British Foreign Policy in the Twentieth Century. 1. publ. in the USA. New York: St. Martin's Pr, 1989.

MLA (9th ed.) Citation

Bartlett, C. J. British Foreign Policy in the Twentieth Century. 1. publ. in the USA. St. Martin's Pr, 1989.