International petroleum encyclopedia 1996
editor Jim West
PennWell Pub. Co., 1998
Buku Referensi
International Petroleum encyclopedia 1990
editor, John C. McCaslin
PennWell Publishing , 1990
Buku Referensi
Variety International film guide 1996
edited by Peter Cowie
Hamlyn, 1995
Buku Referensi
Johnston, Daniel
International petroleum fiscal system and production sharing contracts
Penwell Books, 1994
Buku Teks
Larousse illustrated international encyclopedia
Larousse , 1972
Buku Referensi
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