APA (7th ed.) Citation

Armstrong, J. D., Farrell, T., & Lambert, H. (2012). International law and international relations (2nd ed.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Armstrong, J. D., Theo Farrell, and Helene Lambert. International Law and International Relations. 2nd ed. Cambridge: Cambridge University Press, 2012.

MLA (9th ed.) Citation

Armstrong, J. D., et al. International Law and International Relations. 2nd ed. Cambridge University Press, 2012.