Deegan, Heather, author
Routledge, 1996
Buku Teks
Dumont, Louis
Mouton, 1970
Buku Teks
edited by Amal Kumar Mukhopadhyay
Council for Political Studies, 1974
Buku Teks
Sharma, I.C.
Neb. Johnsen , 1965
Buku Teks
Jelnikar, Ana, author
Oxford University Press, 2016
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