Edwards, Eric J., author
[Publisher not identified], 1969
Buku Teks
Dine, Janet, author
Blackstone Press, 1993
Buku Teks
Breet
Butterworth, 1989
Buku Teks
Dine, Janet, author
Blackstone Press, 1998
Buku Referensi
Waller, Louis, author
Butterworth, 1989
Buku Teks