edited by Muneera Salem-Murdock and Michael M. Horowitz, with Monica Sella
Westview Press, 1990
Buku Teks SO
Lele, Uma
Johns Hopkins, 1975
Buku Teks SO
Chambers, Robert, 1932-
The Scandinavian Institute of African Studies, 1974
Buku Teks SO
Cochrane, Glynn
Oxford University Press, 1971
Buku Teks SO
Selo Soemardjan
Cornell University , 1963
Buku Teks SO