Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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