Daum, P.A., author
Thomas and Eras Uitgevers, 1978
Buku Teks
Sri Astuti Rahayu, author
Lembaga Penelitian Universitas Indonesia, 2007
Artikel Jurnal
Hyman, David N.
Times Mirror/Mosby College, 1986
Buku Teks
Iogonline
Indonesia oil & Gas, 2001
Buku Teks
The IOG chronicle
Prosinergi Multitama, 2002
Buku Referensi