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Oxford University Press, 1982
Buku Teks
Konvitz, Milton R.
Columbia University Press, 1962
Buku Teks
Abernathy, Charles F., author
St. Paul Minn., 2000
Buku Teks
Carey, John, author
Syracuse University Press , 1971
Buku Teks
Pan Mohamad Faiz Kusuma Wijaya, author
Faculty of Law University of Indonesia, 2016
Artikel Jurnal