APA (7th ed.) Citation

United States. Bureau of the Census. (1972). Occupations by industry. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of the Census. Occupations By Industry. [Washington]: [publisher not identified], 1972.

MLA (8th ed.) Citation

United States. Bureau of the Census. Occupations By Industry. [publisher not identified], 1972.

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