Não informado. (1959). NASA Technical Memorandum. National Aeronautics and Space Administration.
Chicago (17e ed.) BronvermeldingNão informado. NASA Technical Memorandum. Washington: National Aeronautics and Space Administration, 1959.
MLA (8e ed.) BronvermeldingNão informado. NASA Technical Memorandum. National Aeronautics and Space Administration, 1959.
Let op: Deze citaties zijn niet altijd 100% accuraat.