edited by Allan McNaught
Chapman and Hall , 1991
Buku Teks
Brightbill, Charles K.
Prentice-Hall, 1961
Buku Teks
Ramhadtu Prasaditama
Sage, 2014
Buku Teks
Rojek, Chris
Palgrave Macmillan, 2005
Buku Teks
Aderson, Nels
Free Press of Glencoe , 1961
Buku Teks