Cita APA

Koester, U. E. 1., & Koester, U. E. 1. (1987). Trade in agricultural products among African countries. Washington, D.C.

Citación estilo Chicago

Koester, Ulrich E. 1938-, y Ulrich E. 1938- Koester. Trade in Agricultural Products Among African Countries. Washington, D.C, 1987.

Cita MLA

Koester, Ulrich E. 1938-, y Ulrich E. 1938- Koester. Trade in Agricultural Products Among African Countries. Washington, D.C, 1987.