Lane, Richard J, author
Routledge, 2006
Buku Teks
Joy A. Palmer
Routledge , 2001
Buku Teks
Abel, Donald C, 1952-, author
McGraw - Hill , 2012
Buku Teks
Collinson, Diane, author
Routledge, 2006
Buku Teks
Chang, Raymond, author
Random House, 1988
Buku Teks