Cadd Tanazuli
عد تنازلي: تاريخ رحلات الفضاء
Nau'ikan
Bincikenka na kwanan nan zai bayyana a nan
Cadd Tanazuli
Muhammad Sacd Tantawi d. 1450 AHعد تنازلي: تاريخ رحلات الفضاء
Nau'ikan
New York: W. W. Norton, 1988.
Fimmel, Richard O., James Van Allen, and Eric Burgess.
Beyond.
NASA SP-446. Washington, D.C.: U.S. Government
Fimmel, Richard O., Lawrence Colin, and Eric Burgess.
NASA SP-461. Washington, D.C.: U.S. Government Printing Office, 1983.
Frisbee, John L., ed.
Makers of the United States Air Force.
Washington, D.C.: Office of Air Force History, 1987.
Galloway, Jonathan F.
Shafi da ba'a sani ba
Shigar da lambar shafi tsakanin 1 - 310