APA (7th ed.) Citation

United States. Bureau of the Census & Willcox, W. F. (1904). Proportion of sexes in U.S: [1900 and trends]. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

United States. Bureau of the Census and Walter F. Willcox. Proportion of Sexes in U.S: [1900 and Trends]. Washington: U.S. Government Printing Office, 1904.

MLA (9th ed.) Citation

United States. Bureau of the Census and Walter F. Willcox. Proportion of Sexes in U.S: [1900 and Trends]. U.S. Government Printing Office, 1904.