International petroleum encyclopedia 1996
editor Jim West
PennWell Pub. Co., 1998
 Buku Referensi
Johnston, Daniel
International petroleum fiscal system and production sharing contracts
Penwell Books, 1994
 Buku Teks
Adelman, M.A.
The world petroleum market
Johns Hopkins University Press, 1972
 Buku Teks SO
Frankel, P.H.
Essentials of petroleum : a key to oil economics
Chapman and Hall, 1946
 Buku Teks SO
Porter, Stanley P.
Petroleum accounting practices / Stanley P. Porter
McGraw-Hill, 1965
 Buku Teks SO