Houghton, John W.
Culture and currency: cultural bias in monetary theory and policy / John W. Houghton
Westview Press , 1991
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Robbins, Lionel
The Great depression
Macmillan, 1936
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Mann, F.A.
The legal aspect of money with special reference to comparative and private international law/ F.A. Mann
Humphrey Milford Oxford University Press , 1938
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English historical documents 500-1042
edited by Dorothy Whitelock
Eyre & Spottiswoode, 1955
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Rowse, Alfred Leslie, 1903-1997
The spirit of English history
British Council, 1943
 Buku Teks SO