U.S. Bureau of the Census. (1952). United States census of agriculture: 1950. U.S. Govt. Print. Off.
Cita Chicago (17th ed.)U.S. Bureau of the Census. United States Census of Agriculture: 1950. Washington: U.S. Govt. Print. Off, 1952.
Cita MLA (9th ed.)U.S. Bureau of the Census. United States Census of Agriculture: 1950. U.S. Govt. Print. Off, 1952.
Atenció: Aquestes cites poden no estar 100% correctes.