Heneveld, Word
Schools count : world project design and the quality of primary education in Sub-Saharan Africa / Word Heneveld, Helen Craig
The World Bank , 1996
 Buku Teks
Vos Savant, Marilyn, 1946-
Nao li ji jin : shi er zhou cheng zhang ji hua = Mental radical : twelve weeks growth plan = 力激進 : 十二週成長計畫
Tian Xia Wen Hua, 1995
 Buku Teks
Murdock, George Peter
Africa
McGraw-Hill, 1959
 Buku Teks
Murdock, George Peter
Africa
McGraw-Hill, 1959
 Buku Teks
Africa
edited by Phillis M. Martin and Patrick O'Meara
Indiana University Press, 1995
 Buku Teks SO