Kimble, George H. T.
Tropical Africa volume 2 / George H.T. Kimble
The Twentieth Century Fund, 1960
 Buku Teks
Farer, Tom J.
War clouds on the Horn of Africa: a crisis for detente
Carnegie Endowment for International Peace, 1976
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Gay, Phillip T.
Modern south Africa : a volume in the comparative societies series
McGraw-Hill, 2001
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Marcus, Edward
Investment and development possibilities in tropical Africa
Bookman Associates, 1960
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Emha Ainun Nadjib, 1953-
Kerajaan Indonesia
Progress, 2006
 Buku Teks