Swift, Jeremy
The Sahara
Time-Life Internationa, 1975
 Buku Teks SO
Kagan, Robert A.
Philippe nonet phlip sedenick
 Buku Teks
Wiedner, Donald L. [Donal Lawrence]
A history of Africa south of the Sahara
Random House, 1962
 Buku Teks SO
Price, Willard
Underwater adventure
John Day, 1954
 Buku Teks SO
Stafford, J.
Boston Adventure
New York Harcourt, Brace and Company 1944
 Buku Teks