APA (7th ed.) Citation

Bull, H., Kingsbury, B., & Roberts, A. (1990). Hugo Grotius and international relations. Clarendon Press ; Oxford University Press.

Chicago Style (17th ed.) Citation

Bull, Hedley, Benedict Kingsbury, and Adam Roberts. Hugo Grotius and International Relations. Oxford [England] : New York: Clarendon Press ; Oxford University Press, 1990.

MLA (9th ed.) Citation

Bull, Hedley, et al. Hugo Grotius and International Relations. Clarendon Press ; Oxford University Press, 1990.