M.R. Walrod
The Australian National University, 1976
Buku Teks
Irzanti Sutanto, author
Universitas Indonesia, 2014
UI - Disertasi (Membership)
editor, Alan Williams
Emap, 1993
Buku Referensi
Cameron, Deborah, author
Routledge, 1995
Buku Teks
New York Academic Press
Majalah, Jurnal, Buletin