Everitt, Brian S.
Edward Arnold , 1992
Buku Teks
Axelrod, Michael I., author
Routledge, 2017
Buku Teks
Patrick Guinness, author
1998
Artikel Jurnal
Miller, Jane E., author
University of Chicago Press, 2005
Buku Teks
Borgo, Mauro, author
[, Springer], 2012
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