Casner, A. James, author
Little, Brown and Company, 1969
Buku Teks
Kur, Annette, author
Edward Elgar, 2013
Buku Teks
Smith, Roger J., author
Longman, 2000
Buku Teks
Sackville, Ronald, author
Butterworth, 1975
Buku Teks
Breet
Butterworth, 1989
Buku Teks