Perry, Richard J., author
Prentice-Hall, 2003
Buku Teks
edited by Robert Launay
Wiley-Blackwell, 2010
Buku Teks
Moberg, Mark, 1959-, author
Routledge, 2013
Buku Teks
edited by Henrika Kuklick
Blackwell Pub, 2008
Buku Teks
edited by Philip Carl Salzman, Patricia C. Rice
Pearson/Prentice Hall, 2004
Buku Teks