Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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