Barrett, Maxwell, author
Blackstone Press Limited, 1998
Buku Referensi
Leder, Malcolm, author
Pitman, 1996
Buku Teks
Shears, Peter, author
Pitman, 1991
Buku Teks
Rowlands, Graham, author
MAKAR, 1972
Buku Teks
edited by Hilary Lewis Ruttley
[publisher not identified], 1995
Buku Teks