APA (7th ed.) Citation

Numelin, R. J. (1950). The beginnings of diplomacy: A sociological study of intertribal and international relations. Oxford U.P..

Chicago Style (17th ed.) Citation

Numelin, Ragnar Julius. The Beginnings of Diplomacy: A Sociological Study of Intertribal and International Relations. Lond.: Oxford U.P., 1950.

MLA (8th ed.) Citation

Numelin, Ragnar Julius. The Beginnings of Diplomacy: A Sociological Study of Intertribal and International Relations. Oxford U.P., 1950.