Passmore, John
Gerald Duckworth, 1957
Buku Teks
Passmore, John
Penguin Books, 1972
Buku Teks
Howarth, David
Edward Elgar, 2013
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Penniman, T.K.
Duckworth, 1935
Buku Teks
Smellie, Kingsley Bryce, 1897-1987
Gerald Duckworth & Co,LTD, 1950
Buku Teks