Plumb, John Harold, 1911-
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Buku Teks SO
Thomson, David
Penguin Books , 1950
Buku Teks SO
edited with an introduction by A.E. Musson
Methuen, 1972
Buku Teks
Robbins, Lionel, editor
McMillan & Co., 1952
Buku Teks
McDonagh, Briony
Routledge , 2018
Buku Teks