APA (7th ed.) Citation

United States. Bureau of the Census, Edwards, A. M., & Truesdell, L. E. (1930). Alphabetical index of occupations.: Fifteenth census of the United States. U. S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

United States. Bureau of the Census, Alba M. Edwards, and Leon E. Truesdell. Alphabetical Index of Occupations.: Fifteenth Census of the United States. Washington: U. S. Govt. Print. Off, 1930.

MLA (9th ed.) Citation

United States. Bureau of the Census, et al. Alphabetical Index of Occupations.: Fifteenth Census of the United States. U. S. Govt. Print. Off, 1930.