APA (7th ed.) Citation

United States. Bureau of the Census. (1960). Classified index of occupations and industries. 1960 census of population.

Chicago Style (17th ed.) Citation

United States. Bureau of the Census. Classified Index of Occupations and Industries. 1960 Census of Population. Washington, 1960.

MLA (9th ed.) Citation

United States. Bureau of the Census. Classified Index of Occupations and Industries. 1960 Census of Population. 1960.

Warning: These citations may not always be 100% accurate.