Não informado. (2001). Scientific and technical aerospace reports. National Aeronautics and Space Administration.
Citação do estilo Chicago (17ª ed.)Não informado. Scientific and Technical Aerospace Reports. Washington: National Aeronautics and Space Administration, 2001.
Citação MLA (8ª ed.)Não informado. Scientific and Technical Aerospace Reports. National Aeronautics and Space Administration, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.