Dyfyniad APA

Johnson, D. G., & Schuh, G. E. (1983). The Role of markets in the world food economy. Westview Press.

Dyfyniad Arddull Chicago

Johnson, D. Gale, and G. Edward Schuh. The Role of Markets in the World Food Economy. Boulder, Colo: Westview Press, 1983.

Dyfyniad MLA

Johnson, D. Gale, and G. Edward Schuh. The Role of Markets in the World Food Economy. Westview Press, 1983.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.