Παραπομπή APA

Thomas, R. S. (1956). Free ports and foreign trade zones. Cornell maritime press.

Παραπομπή Chicago Style

Thomas, Richard S. Free Ports and Foreign Trade Zones. cambridge: Cornell maritime press, 1956.

Παραπομπή MLA

Thomas, Richard S. Free Ports and Foreign Trade Zones. Cornell maritime press, 1956.