APA (7th ed.) Citation

United States. Weather Bureau. (1924). Instructions for cooperative observers. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Weather Bureau. Instructions for Cooperative Observers. Washington: U.S. GPO, 1924.

MLA (9th ed.) Citation

United States. Weather Bureau. Instructions for Cooperative Observers. U.S. GPO, 1924.

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