Kearney, Robert N.
Cornell University Press, 1973
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Harishmawan Heryadi
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2014
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Das, Gautam
Har-Anand Publications , 2008
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Wriggins, W. Howard
Columbia University Press, 1969
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Wriggins, W. Howard
McGraw-Hill, 1978
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