APA (7th ed.) Citation

Heatley, D. P. (1919). Diplomacy and the study of international relations. Clarendon Pr.

Chicago Style (17th ed.) Citation

Heatley, David Playfair. Diplomacy and the Study of International Relations. Oxford: Clarendon Pr, 1919.

MLA (9th ed.) Citation

Heatley, David Playfair. Diplomacy and the Study of International Relations. Clarendon Pr, 1919.

Warning: These citations may not always be 100% accurate.