Gutteridge, Harold Cooke, author
Jackson, Son & Company, 1951
Buku Teks
Winarti Sari Marina, author
Fakultas Hukum Universitas Indonesia, 2011
UI - Tesis (Open)
Jenks, C. Wilfred
Stevens & Sons Limited, 1960
Buku Teks
Stefan Vogenauer, editor
Oxford University Press, 2015
Buku Teks
edited by Barbara J. Fick
Edward Elgar Publishing, 2015
Buku Teks