Robertson, Hector Menteith
South Africa economic and political aspects
Cambridge University Press, 1957
 Buku Teks
Laode M Syarif
Addressing the root of political corruption in Indonesia
Komisi Pemberantasan Korupsi, 2019
 Artikel Jurnal
Democracy and political change in Sub-Saharan Africa
edited by John A. Wiseman
Routledge, 1995
 Buku Teks
Murdock, George Peter
Africa
McGraw-Hill, 1959
 Buku Teks
Murdock, George Peter
Africa
McGraw-Hill, 1959
 Buku Teks