Indonesian Oil and Gas, 2002
Buku Referensi
Wunsch, A. David
Addison-Wesley Pub.Co., 1994
Buku Teks
Benton, Michael
Longman , 1997
Buku Teks
Bayley, David H.
Oxford University Press, 1994
Buku Teks
Lowe, John S., author
West Publishing, 1995
Buku Teks