Chambers, Robert, 1932-, author
The Scandinavian Institute of African Studies, 1974
Buku Teks
Lele, Uma
Johns Hopkins, 1975
Buku Teks
edited by Michael M. Horowitz and Thomas M. Painter
Westview Press, 1986
Buku Teks
Sage Publications, 1993
Buku Teks
Europa Publications Limited, 1991
Buku Referensi