APA (7th ed.) Citation

United States. Federal Aviation Administration. (1966). Portable battery-powered megaphones. Federal Aviation Administration.

Chicago Style (17th ed.) Citation

United States. Federal Aviation Administration. Portable Battery-powered Megaphones. [Washington, D.C.]: Federal Aviation Administration, 1966.

MLA (9th ed.) Citation

United States. Federal Aviation Administration. Portable Battery-powered Megaphones. Federal Aviation Administration, 1966.

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