Nyoman Kutha Ratna
Yogyakarta : Pustaka Pelajar, 2007,
Buku Teks
Graham, Gordon
Routledge, 1997
Buku Teks SO
edited by Berys Gaut, Dominic Mclver Lopes
Routledge, 2005
Buku Teks SO
edited by Berys Gaut, Dominic McIver Lopes
Routledge, 2006
Buku Referensi
Steven M. Cahn, Aaron Meskin, editor
Blackwell Publishing, 2008
Buku Teks SO