Cita APA (7a ed.)

Leffler, W. L. (2000). Petroleum refining in nontechnical language (3rd ed.). PennWell.

Cita Chicago Style (17a ed.)

Leffler, William L. Petroleum Refining in Nontechnical Language. 3rd ed. Tulsa (Oklahoma): PennWell, 2000.

Cita MLA (9a ed.)

Leffler, William L. Petroleum Refining in Nontechnical Language. 3rd ed. PennWell, 2000.