Routledge, 1996
Buku Referensi
Crowley, F.K. (Francis Keble), 1924-2013, author
Nelson, 1980
Buku Teks
Director-General of guidance and Broadcasting, 1956
Buku Teks
Shuter, Paul
Heineman Educational , 1988
Buku Teks
Cobban, Alfred, author
Penguin Books, 1990
Buku Teks