Asean Law Association of the Philippines. Inc, 1982
Majalah, Jurnal, Buletin
Freund, Paul A., author
Harvard University Press, 1974
Buku Teks
Ross, Alf, author
University of California Press, 1959
Buku Teks
Kelsen, Hans, author
University of California Press, 1957
Buku Teks
edited by John Henry Wigmore
Japan Cultural Society, 1969 - 1972
Buku Teks