Jemmy Helmi Berlian
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1999
UI - Skripsi Membership
Carvan, John
The Law Book Company Limited, 1995
Buku Teks
Golde, Hilary
NSWU Press, 1985
Buku Teks
Carvan, John
Law Book Co., 1995
Buku Teks
Parker, R.S.
Prentice Hall International, 1978
Buku Teks SO