B. Blackwell for the United Nations Industrial Development Organization, 1991
Buku Teks
Philia Silado, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2012
UI - Skripsi (Open)
Cambridge University Press, 2003
Buku Teks
Brennan, Teresa, author
Routledge, 2000
Buku Teks
Rosen, Andrew S., author
Kaplan, 2011
Buku Teks