APA (7th ed.) Citation

United States. Bureau of Public Roads. (1924). Road under construction, map of detour, passable but drive with care. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Bureau of Public Roads. Road Under Construction, Map of Detour, Passable but Drive with Care. Washington: U.S. GPO, 1924.

MLA (9th ed.) Citation

United States. Bureau of Public Roads. Road Under Construction, Map of Detour, Passable but Drive with Care. U.S. GPO, 1924.

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