APA (7th ed.) Citation

Geller, D. S., & Singer, J. D. (1998). Nations at war: A scientific study of international conflict. Cambridge University Press.

Chicago Style (17th ed.) Citation

Geller, Daniel S.., and Joel David Singer. Nations at War: A Scientific Study of International Conflict. Cambridge: Cambridge University Press, 1998.

MLA (9th ed.) Citation

Geller, Daniel S.., and Joel David Singer. Nations at War: A Scientific Study of International Conflict. Cambridge University Press, 1998.