Barrow, Christopher J.
Routledge, 2006
Buku Teks
editor, Abdul Malik, Elisabeth Grohmann
Springer, 2012
eBooks
edited by Mohamad Soerjani and Monica Hale
The University of Indonesia , 1997
Buku Teks
proposed by Centre for Research of Human Resources and the Environment
University of Indonesia, 1990
Buku Teks
Rodrigues, Edson Beas, Jr.
Cambridge University Press,, 2012
Buku Teks