Frohlich, Norman
Prentice-Hall, 1987
Buku Teks
Frohlich, Norman
Bina Aksara, 1984
Buku Teks
Frohlich, Norman
Prentice-Hall, 1978
Buku Teks
edited by Nelson Lichtenstein
University of Pennsylvania press, 2006
Buku Teks
Grant, Wyn, author
Harvester Wheatsheaf , 1993
Buku Teks