Lucy, Richard, author
Macmillan, 1985
Buku Teks
Crisp, L. F. (Leslie Finlay), author
Longman Chesire, 1965
Buku Teks
Joske, Percy Ernest, author
Butterworth, 1967
Buku Teks
Bennett, Raymond, author
M.M & B. Book, 1989
Buku Teks
Sawer, Geoffrey, 1910-1996, author
Melbourne University Press, 1973
Buku Teks