APA (7th ed.) Citation

International Civil Aviation Organization. (1970). International signs to facilitate passengers using airports.

Chicago Style (17th ed.) Citation

International Civil Aviation Organization. International Signs to Facilitate Passengers Using Airports. Montrealn, 1970.

MLA (9th ed.) Citation

International Civil Aviation Organization. International Signs to Facilitate Passengers Using Airports. 1970.

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