by Peter J. May [and others]
Routledge, 1996
Buku Teks
John Wiley & Sons, 1996
Buku Teks
Honachefsky, William B., author
Noyes Pub., 1991
Buku Referensi
Barrow, Christopher J., author
Routledge, 2006
Buku Teks
Herliana Dewi, author
Program Pascasarjana Universitas Indonesia, 2014
UI - Tesis (Membership)