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Macmillan, 1964
Buku Teks
Morris, H.F
Clarendon Press Oxford, 1972
Buku Teks
Andreae, J.P. Pockema
A.W. Sijthoff, 1948
Buku Teks
Jones, Mark, author
Elsevier, 2012
Buku Teks
Yeni Salma Barlinti, author
Faculty of Law University of Indonesia, 2013
Artikel Jurnal