Seifert, H. S. (1959). Space technology. John Wiley and Sons, INC.
Chicago-čujuhus (17. p.)Seifert, Howard S. Space Technology. New York: John Wiley and Sons, INC, 1959.
MLA-čujuhus (9. p.)Seifert, Howard S. Space Technology. John Wiley and Sons, INC, 1959.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.