Dyfyniad APA

Valdes, A., & Schaeffer, B. (1996). Surveillance of agricultural price and trade policies: A handbook for Paraguay. World Bank.

Dyfyniad Arddull Chicago

Valdes, Alberto, and Barry Schaeffer. Surveillance of Agricultural Price and Trade Policies: A Handbook for Paraguay. Washington, D.C: World Bank, 1996.

Dyfyniad MLA

Valdes, Alberto, and Barry Schaeffer. Surveillance of Agricultural Price and Trade Policies: A Handbook for Paraguay. World Bank, 1996.

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