Gillette, Clayton P.
Palmer avenue. Larchmont, 1995
Buku Teks
Universitas Indonesia, 1995
UI - Skripsi Membership
Whaley, Douglas J.
Harcourt Brace Legal, 1992
Buku Teks
Nickles, Steve H.
West Publishing, 1993
Buku Teks
Universitas Indonesia, 1997
UI - Skripsi Membership