APA (7e ed.) Bronvermelding

Não informado. AOPA Pilot. Aircraft Owners and Pilots Association.

Chicago (17e ed.) Bronvermelding

Não informado. AOPA Pilot. Bethesda, Md: Aircraft Owners and Pilots Association.

MLA (8e ed.) Bronvermelding

Não informado. AOPA Pilot. Aircraft Owners and Pilots Association.

Let op: Deze citaties zijn niet altijd 100% accuraat.