APA (7th ed.) Citation

Hamilton, K. A., & Langhorne, R. (1995). The practice of diplomacy: Its evolution, theory, and administration. Routledge.

Chicago Style (17th ed.) Citation

Hamilton, Keith A., and Richard Langhorne. The Practice of Diplomacy: Its Evolution, Theory, and Administration. London: Routledge, 1995.

MLA (9th ed.) Citation

Hamilton, Keith A., and Richard Langhorne. The Practice of Diplomacy: Its Evolution, Theory, and Administration. Routledge, 1995.