Schiffman, Harold F.
Routledge, 1996
Buku Teks
Chaudenson, Robert
Routledge, 2001
Buku Teks SO
edited by Sohn Ho-min
University of Hawaii, 2006
Buku Teks
edited by Alessandro Duranti
Blaxkwell , 2004
Buku Teks
Lee, Sang-oak
Do Wook Choi, 2008
Buku Referensi