Cita APA

(1957). Soil: The yearbook of agriculture 1957. Washington: The United States Government Printing Office.

Citación estilo Chicago

Soil: The Yearbook of Agriculture 1957. Washington: The United States Government Printing Office, 1957.

Cita MLA

Soil: The Yearbook of Agriculture 1957. Washington: The United States Government Printing Office, 1957.

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