edited by Richard A. Smith
University of Hawaii Press, 1978
Buku Teks
Akhtar, Shahid
International Development Research Centre, 1975
Buku Teks
edited by Kenneth Lee, Anne Mills
Oxford University Press, 1984
Buku Teks
David Zilberman, Joachim Otte, David Roland-Holst, Dirk Pfeiffer, editors
[Springer, ], 2012
eBooks
Julia Hussein, Affette McCaw-Binns, and Roger Webber.
CABI, 2012
Buku Teks