Salanie, Bernard
The Plit Press, 1997
Buku Teks
Allery, Philip, author
Sweet & Maxwell, 2000
Buku Teks
Ramsey, Vivian, author
Sweet & Maxwell, 2000
Buku Teks
Wallace, I. N. Duncan
Sweet and Maxwell, 1970
Buku Teks
Rayner, Susan E., author
Graham Trotman, 1991
Buku Teks