Judson, Karen, 1941-, author
McGra-Hill Connect Learn Succeed, 20103
Buku Teks
Kerridge, Ian, author
Social Science Press, 1998
Buku Teks
edited by Michael Parker
Routledge , 1999
Buku Teks
Lewis, Marcia A.
F.A. Davis Company, 2012
Buku Teks
Furrow, Barry R, author
Thomson/West, 2008
Buku Teks