Cita APA (7a ed.)

Verzijl, J. H. W. (1976). International law in historical perspective. A.W. Sijthoff.

Cita Chicago Style (17a ed.)

Verzijl, J. H. W. International Law in Historical Perspective. Leyden: A.W. Sijthoff, 1976.

Cita MLA (9a ed.)

Verzijl, J. H. W. International Law in Historical Perspective. A.W. Sijthoff, 1976.