Cutt, James, author
Australian National University Press, 1977
Buku Teks
Fisher, C.M., author
Routledge , 1998
Buku Teks
Greer, Charles R., author
Prentice-Hall, 2001
Buku Teks
Greer, Charles R., author
Prentice-Hall, 2001
Buku Teks
Greer, Charles R., author
Prentice-Hall, 2001
Buku Teks