APA Style

Maples, Robert E.. (1993). Petroleum Refinery Process Economics . Oklahoma: PennWell.

Chicago Style

Maples, Robert E.. Petroleum Refinery Process Economics. Oklahoma: PennWell, 1993. Text.

MLA Style

Maples, Robert E.. Petroleum Refinery Process Economics. Oklahoma: PennWell, 1993. Text.

Turabian Style

Maples, Robert E.. Petroleum Refinery Process Economics. Oklahoma: PennWell, 1993. Print.