Cita APA (7a ed.)

Verzijl, J. H. W. (1971). International law in historical perspective. A. W. Sijthoff.

Cita Chicago Style (17a ed.)

Verzijl, Jan Hendrik Willem. International Law in Historical Perspective. Leyden: A. W. Sijthoff, 1971.

Cita MLA (9a ed.)

Verzijl, Jan Hendrik Willem. International Law in Historical Perspective. A. W. Sijthoff, 1971.