APA (7th ed.) Zitazioa
Parkash, S. (2003). Refining processes handbook. Gulf Professional Pub..
Chicago Style (17th ed.) Zitazioa
Parkash, Surinder. Refining Processes Handbook. Amsterdam ; Boston: Gulf Professional Pub., 2003.
MLA (9th ed.) Zitazioa
Parkash, Surinder. Refining Processes Handbook. Gulf Professional Pub., 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.