APA (7e ed.) Bronvermelding

Não informado. (1977). NASA Conference Publication. National Aeronautics and Space Administration.

Chicago (17e ed.) Bronvermelding

Não informado. NASA Conference Publication. Washington: National Aeronautics and Space Administration, 1977.

MLA (8e ed.) Bronvermelding

Não informado. NASA Conference Publication. National Aeronautics and Space Administration, 1977.

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