Mensch, James Richard
Duquesne University Press, 2005
Buku Teks SO
Allen & Unwin, 1999
Buku Teks
Dhavamony, Mariasusai
Kanisius, 1995
Buku Teks
Duarte, Eduardo M.
[Sense, Sense], 2012
eBooks
Casey, Edward S., 1939-
Spring Publications, 1991
Buku Teks SO