Dyfyniad APA

ICAO. (1977). Fleet personnel: Commercial air carriers. International Civil Aviation Organization.

Dyfyniad Arddull Chicago

ICAO. Fleet Personnel: Commercial Air Carriers. Montreal: International Civil Aviation Organization, 1977.

Dyfyniad MLA

ICAO. Fleet Personnel: Commercial Air Carriers. International Civil Aviation Organization, 1977.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.