Mujiyat, author
Culture Improvement Project, ICTB, 2002
Buku Referensi
Mende, Tibor, author
Buku Teks
Cohen, David, author
Routledge, 2006
Buku Teks
Scandett, W. George, author
Sage publications, 2005
Buku Teks
by W. George Scarlett, Sophie Naudeau Dorothy Salonius-Pasternak and Iris Ponte
Sage, 2005
Buku Teks