Estados Unidos. Bureau of the Census & Batschelet, C. E. (1953). Portfolio of United States census maps: A selection of maps used in the publications of the 1950 censuses of population and agriculture. United States Government Printing Office.
Cita Chicago Style (17a ed.)Estados Unidos. Bureau of the Census y Clarence E. Batschelet. Portfolio of United States Census Maps: A Selection of Maps Used in the Publications of the 1950 Censuses of Population and Agriculture. Washington: United States Government Printing Office, 1953.
Cita MLA (9a ed.)Estados Unidos. Bureau of the Census y Clarence E. Batschelet. Portfolio of United States Census Maps: A Selection of Maps Used in the Publications of the 1950 Censuses of Population and Agriculture. United States Government Printing Office, 1953.
