APA (7th ed.) Citation

United States. Bureau of the Census. (1992). The 1990 United States Census [2nd]. Project Gutenberg.

Chicago Style (17th ed.) Citation

United States. Bureau of the Census. The 1990 United States Census [2nd]. Project Gutenberg, 1992.

MLA (9th ed.) Citation

United States. Bureau of the Census. The 1990 United States Census [2nd]. Project Gutenberg, 1992.

Warning: These citations may not always be 100% accurate.