Cita APA

Vocke, G., & Allen, E. (2004). Wheat situation and outlook yearbook. Washington, D.C.: U.S. Departamento of Agriculture, Economic Research Service.

Citación estilo Chicago

Vocke, Gary, y Edward Allen. Wheat Situation and Outlook Yearbook. Washington, D.C.: U.S. Departamento of Agriculture, Economic Research Service, 2004.

Cita MLA

Vocke, Gary, y Edward Allen. Wheat Situation and Outlook Yearbook. Washington, D.C.: U.S. Departamento of Agriculture, Economic Research Service, 2004.