Tjuk Kuswartojo
Dikti , 1997
Buku Teks
by Martin Beyersdorff [and others]
Wiley, 2014
Buku Teks
Mac Dangall, Curtis D.
Macmillan, 1967
Buku Teks
Isdarmadji
Fakultas Hukum Universitas Indonesia, 2000
UI - Skripsi (Membership)
Evans, Thomas G.
PWS-KENT Publishing, 1988
Buku Teks