Cita APA (7a ed.)

Não informado. (2004). Ers. U.S. Department of Agriculture, Economic Research Service.

Cita Chicago Style (17a ed.)

Não informado. Ers. Washington: U.S. Department of Agriculture, Economic Research Service, 2004.

Cita MLA (8a ed.)

Não informado. Ers. U.S. Department of Agriculture, Economic Research Service, 2004.

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