Lowry, Robert
St Leonards Allen & Unwin 1996
Buku Teks
MacIntosh, Malcolm
Frances Printer Pub., 1986
Buku Teks
Lowry, Robert
Allen & Unwin, 1996
Buku Teks
Martin, David, author
Dove Communications, 1984
Buku Teks
Deutsher, I., author
Oxford University Press, 1954
Buku Teks