Cita APA (7th ed.)

Walter, I. (1973). U.S. trade policy in a changing world economy. Mohr.

Cita Chicago (17th ed.)

Walter, Ingo. U.S. Trade Policy in a Changing World Economy. Tubingen: Mohr, 1973.

Cita MLA (8th ed.)

Walter, Ingo. U.S. Trade Policy in a Changing World Economy. Mohr, 1973.