edited by John K. Ryan
The Catholic University of America Press, 1963
Buku Teks
edited by Ron Sun
Cambridge University Press, 2008
Buku Referensi
Mcgilvray, James, author
Polity, 2014
Buku Teks
Erna Risnawati, author
2013
UI - Tesis (Membership)
Bonifati, Nunzia, author
[, Springer], 2012
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