White, D. J.
North-Holland Publishing Company, 1976
Buku Teks
Mowitz, Robert J.
University Park Press, 1980
Buku Teks
Ibnu Syamsi, author
Bina Aksara, 1989
Buku Teks
Radford, K.J., author
Prushin-Hall, 1974
Buku Teks
edited by Anthony G. McGrew
Manchester University Press, 1985
Buku Teks