Gaya APA
Maples, R, E. (2000).
Petroleum refinery process economics (2000).
Tulsa,Oklahoma:
Tulsa-Oklohama : PennWell Books,.
Gaya MLA
Maples, Robert, E.
"Petroleum refinery process economics".
2000
Tulsa,Oklahoma:
Tulsa-Oklohama : PennWell Books,,
2000.
Text.