Simmons, Alan
International Development Research Centre, 1977
Buku Teks
Gilbert, Alan, author
University Press, 1989
Buku Teks
Gilbert, Alan, author
Tiara Wacana Yogya , 1996
Buku Teks
edited by Harvey G. Kebschull
Appleton-Century-Crofts , 1968
Buku Teks
Yue, Zhongshan, author
World Scientific, 2016
Buku Teks