Cita APA (7a ed.)

USDA. Economic Research Service. (1968). Studies in the series on world trade in selected agricultural commodities, 1951-65. [editor no identificado].

Cita Chicago Style (17a ed.)

USDA. Economic Research Service. Studies in the Series on World Trade in Selected Agricultural Commodities, 1951-65. [Lugar de publicación no identificado]: [editor no identificado], 1968.

Cita MLA (8a ed.)

USDA. Economic Research Service. Studies in the Series on World Trade in Selected Agricultural Commodities, 1951-65. [editor no identificado], 1968.