Carrabine, Eamonn, author
Routledge, 2009
Buku Referensi
Barkan, Steven E., author
Pearson/Prentice Hall, 2006
Buku Teks
Barkan, Steven E., author
Prentice-Hall, 2012
Buku Teks
Septiani Kusherawanti, author
2016
UI - Skripsi Membership
Brenner, M. Harvey, author
Rajawali, 1986
Buku Teks