Rickard, J.A., author
Barnes & Noble, 1952
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Artikel Jurnal
Drake, Charles D.
Sweet & Maxwell, 1972
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Hamblen, David L., author
Churchill Livingstone, Elsevier, 2007
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Huszar, George B. de (George Bernard), 1919-1968, author
Bulan Bintang, [date of publication not identified]
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