APA (7th ed.) Citation

United States. Weather Bureau. (1969). Weather Bureau observing handbook.

Chicago Style (17th ed.) Citation

United States. Weather Bureau. Weather Bureau Observing Handbook. Silver Spring, Md, 1969.

MLA (8th ed.) Citation

United States. Weather Bureau. Weather Bureau Observing Handbook. 1969.

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