Institute for Contemporary Studies & Adams, W. 1. (1979). Tariffs, quotas, and trade: The politics of protectionism. Institute for Contemporary Studies.
Chicago-referens (17:e uppl.)Institute for Contemporary Studies och Walter 1922 Adams. Tariffs, Quotas, and Trade: The Politics of Protectionism. San Francisco: Institute for Contemporary Studies, 1979.
MLA-referens (9:e uppl.)Institute for Contemporary Studies och Walter 1922 Adams. Tariffs, Quotas, and Trade: The Politics of Protectionism. Institute for Contemporary Studies, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.