APA (7th ed.) Citation

U.S. Bureau of the Census. (1951). Alphabetical index of occupations and industries. 1950 census of population (rev ed.). [s.n.].

Chicago Style (17th ed.) Citation

U.S. Bureau of the Census. Alphabetical Index of Occupations and Industries. 1950 Census of Population. rev ed. Washington: [s.n.], 1951.

MLA (9th ed.) Citation

U.S. Bureau of the Census. Alphabetical Index of Occupations and Industries. 1950 Census of Population. rev ed. [s.n.], 1951.