Seifert, H. S. (1959). Space technology. John Wiley and Sons, INC.
Tohutoru Kātū Chicago (17th ed.)Seifert, Howard S. Space Technology. New York: John Wiley and Sons, INC, 1959.
Tohutoro MLA (9th ed.)Seifert, Howard S. Space Technology. John Wiley and Sons, INC, 1959.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.