United States. Bureau of the Census. (1962). United States census of agriculture, 1959, and related surveys: Principal data-collection forms and procedures. U.S. Bureau of the Census.
Lua i Stíl Chicago (17ú heag.)United States. Bureau of the Census. United States Census of Agriculture, 1959, and Related Surveys: Principal Data-collection Forms and Procedures. Washington: U.S. Bureau of the Census, 1962.
Lua MLA (9ú heag.)United States. Bureau of the Census. United States Census of Agriculture, 1959, and Related Surveys: Principal Data-collection Forms and Procedures. U.S. Bureau of the Census, 1962.
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