Blaipain, Roger
Kluwer Law International, 2008
Buku Teks
Edited by Adelle Blackett, Anne Trebilcock
Edward Elgar Publishing, 2015
Buku Teks
Jenks, C. Wilfred
Oxford University Press, 1970
Buku Teks
Universitas Indonesia, 2011
UI - Skripsi (Open)
Artikel Jurnal