APA (7th ed.) Citation

United States. Bureau of the Census & Edwards, A. M. (1940). Alphabetical index of occupations and industries: Occupation and industry classifications based on the respective standard classifications. Sixteenth census of the United States. U.S. Govt. Print. Off..

Chicago Style (17th ed.) Citation

United States. Bureau of the Census and Alba M. Edwards. Alphabetical Index of Occupations and Industries: Occupation and Industry Classifications Based on the Respective Standard Classifications. Sixteenth Census of the United States. Washington, DC: U.S. Govt. Print. Off., 1940.

MLA (8th ed.) Citation

United States. Bureau of the Census and Alba M. Edwards. Alphabetical Index of Occupations and Industries: Occupation and Industry Classifications Based on the Respective Standard Classifications. Sixteenth Census of the United States. U.S. Govt. Print. Off., 1940.