Davies, Hugh Sykes
Published for the British Council by Longmans, Green, 1960
Buku Teks
edited by William L. Howarth
Farrar, Straus and Giroux, 1976
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Cameron, J.M.
British Council, 1884
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Dallek, Robert
Little, Brown & Co., 2003
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Polycarpus Swantoro
Kepustakaan Populer Gramedia, 2019
Buku Teks