Palmer, Norman D.
The Indian political system / Norman D. Palmer
Houghton Mifflin, 1961
 Buku Teks
Palmer, Norman D.
The Indian political system / Norman D. Palmer.
Houghton Mifflin, 1971
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Sharma, Ram Sharan
Aspects of political ideas and institutions in ancient India
Motilal Banarsidass , 1991
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Legge, John D.
Sukarno : a political biography
Allen Lane The Penguin Press, 1972
 Buku Teks
Legge, John D.
Sukarno : a political biography
Penguin Books, 1973
 Buku Teks