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Buku Teks
edited by Lani Florian
Sage Publications, 2014
Buku Referensi
Quittner, Arnold M.
Practising Law Institute, 1992
Buku Teks
edited by Joseph T. Shipley
Philosophical Library, 1946
Buku Referensi
edited by Joseph T. Shipley
Philosophical Library, 1946
Buku Referensi