APA (7th ed.) Citation

U.S. Employment Service. (1940). Oral trade questions, prepared by the United States Employment Service Division, Occupational Analysis Section. Govt. Print. Off.

Chicago Style (17th ed.) Citation

U.S. Employment Service. Oral Trade Questions, Prepared by the United States Employment Service Division, Occupational Analysis Section. Washington: Govt. Print. Off, 1940.

MLA (9th ed.) Citation

U.S. Employment Service. Oral Trade Questions, Prepared by the United States Employment Service Division, Occupational Analysis Section. Govt. Print. Off, 1940.