APA (7th ed.) Citation

Letterman, G. G. (2001). Basics of the international system of customs and tariffs. Transnational Publishers.

Chicago Style (17th ed.) Citation

Letterman, G. Gregory. Basics of the International System of Customs and Tariffs. Ardsley, N.Y.: Transnational Publishers, 2001.

MLA (8th ed.) Citation

Letterman, G. Gregory. Basics of the International System of Customs and Tariffs. Transnational Publishers, 2001.