Narayan, Uma, author
Routledge, 1997
Buku Teks
edited by Chandra Talpade Mohanty, Ann Russo, Lourdes Torres
Indiana University Press, 1991
Buku Teks
Euromonitor, 1989
Buku Teks
Gould, W.T.S., author
John Wiley, Longman Scientific, 1993
Buku Teks
edited by Keith Watson
Croom Helm, 1982
Buku Teks