MLA

Suy, Eric, and Karel Wellens. International Law : Theory and Practice : Essays In Honour of Eric Suy. Boston, Mass.: Martinus Nijhoff, 1998.

APA

Suy, E., & Wellens, K. (1998). International law : theory and practice : essays in honour of Eric Suy. Boston, Mass.: Martinus Nijhoff.

Chicago

Suy, Eric., and Karel Wellens. International Law: Theory and Practice : Essays In Honour of Eric Suy. Boston, Mass.: Martinus Nijhoff, 1998.