APA Style
Leffler, William L. (2008).
Petroleum refining : in nontechnical language .
USA:
PennWell Corporation.
Chicago Style
Leffler, William L.
Petroleum refining : in nontechnical language.
USA:
PennWell Corporation,
2008.
Text.
MLA Style
Leffler, William L.
Petroleum refining : in nontechnical language.
USA:
PennWell Corporation,
2008.
Text.
Turabian Style
Leffler, William L.
Petroleum refining : in nontechnical language.
USA:
PennWell Corporation,
2008.
Print.