Gayle, Mike, author
Seeing other people, 2015
Buku Teks
editors, Chris Bissell, Chris Dillon
Springer, 2012
eBooks
Goodman, Benny, author
Learning matters Ltd., 2008
Buku Teks
Kay, John, author
Public Affairs, 2016
Buku Teks
Peterson, Brooks
Intercultural Press, 2004
Buku Teks