Care, Jennifer Corrin, author
Cavendish Publishing Limited, 2001
Buku Teks
Care, Jennifer Corrin, author
Cavendish Publishing, 2000
Buku Teks
Higgins, P. F. P.
Butterworth, 1974
Buku Teks
Richards, Paul H.
Pitman, 1999
Buku Teks
Tang See Chim
Books International, 1987
Buku Teks