Cita APA
Williams, S. (1987). An Introduction to International law (2nd.ed.). Butterworths.
Citación estilo Chicago
Williams, S.A. An Introduction to International Law. 2nd.ed. Toronto: Butterworths, 1987.
Cita MLA
Williams, S.A. An Introduction to International Law. 2nd.ed. Butterworths, 1987.
Warning: These citations may not always be 100% accurate.