Byrne, Monica
Oxford University Press, 1973
Buku Teks
edited by Abdel R. Omran ; participating Advisory Board, John C. Cassel ... [and others]
Springer, 1974
Buku Teks
edited by Kenneth Lee, Anne Mills
Oxford University Press, 1984
Buku Teks
Organisation for Economic Co-operation and Development. Development Centre., 1972
Buku Teks
Julia Hussein, Affette McCaw-Binns, and Roger Webber.
CABI, 2012
Buku Teks