APA (7th ed.) Citation

U.S. Bureau of the Census. (1921). Census of manufacturers: 1921. Govt. Print. Off.

Chicago Style (17th ed.) Citation

U.S. Bureau of the Census. Census of Manufacturers: 1921. Washington: Govt. Print. Off, 1921.

MLA (9th ed.) Citation

U.S. Bureau of the Census. Census of Manufacturers: 1921. Govt. Print. Off, 1921.