Kagan, Shelly
Yale University Press, 2012
Buku Teks SO
Lieberson, Stanley
Yale University Press, 2000
Buku Teks
Roberts, Sam.
BBC Worldwide Limited, 2004
Multimedia
edited by Paul Freedman
Thames & Hudson, 2007
Buku Referensi
Kalenuik, Ron
Tira Pustaka, 1995
Buku Referensi