Nelson, W. (1949). Petroleum Refinery Engineering (4th ed.). McGraw-Hill.
Chicago Style aipamenaNelson, W.L. Petroleum Refinery Engineering. 4th ed. Tokyo: McGraw-Hill, 1949.
MLA aipamenaNelson, W.L. Petroleum Refinery Engineering. 4th ed. McGraw-Hill, 1949.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.