APA
Verzijl J H W,, . (1978). International law in historical perspective.Vol.X : The law of neutrality. Leyden: A W Sijthoff.
Chicago
Verzijl J H W,, . 1978. International law in historical perspective.Vol.X : The law of neutrality. Leyden: A W Sijthoff.
Harvard
Verzijl J H W,, . (1978). International law in historical perspective.Vol.X : The law of neutrality. Leyden: A W Sijthoff.
MLA
Verzijl J H W,, . International law in historical perspective.Vol.X : The law of neutrality. Leyden: A W Sijthoff. 1978.