Citace podle APA (7th ed.)

Não informado. (2001). Bibliographical contributions. U.S. Department of Agriculture.

Citace podle Chicago (17th ed.)

Não informado. Bibliographical Contributions. Washington: U.S. Department of Agriculture, 2001.

Citace podle MLA (8th ed.)

Não informado. Bibliographical Contributions. U.S. Department of Agriculture, 2001.

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