edited by Thomas and Dorothy Wilson
Longman, 1991
Buku Teks
Kleinman, Mark
Palgrave Macmillan, 2002
Buku Teks
Sheying Chen, Jason L. Powell, editor
[Springer, ], 2012
eBooks
Stein, Theodore J., author
Columbia University Press, 2001
Buku Teks
edited and introduced by Andrew Shonfield and Stella Shaw
Heinemann Educational Books, 1972
Buku Teks