APA (7th ed.) Citation

Leffler, W. L. (1985). Petroleum refining for the non-technical person (2nd ed.). PennWell Books.

Chicago Style (17th ed.) Citation

Leffler, William L. Petroleum Refining for the Non-technical Person. 2nd ed. Tulsa, Okla., USA: PennWell Books, 1985.

MLA (9th ed.) Citation

Leffler, William L. Petroleum Refining for the Non-technical Person. 2nd ed. PennWell Books, 1985.

Warning: These citations may not always be 100% accurate.