Borup, M. B., & Middlebrooks, E. J. (1987). Pollution control in the petrochemicals industry. Lewis Publishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Borup, M. Brett, και E. Joe Middlebrooks. Pollution Control in the Petrochemicals Industry. Chelsea, Mich: Lewis Publishers, 1987.
Παραπομπή σε μορφή MLA (9th εκδ.)Borup, M. Brett, και E. Joe Middlebrooks. Pollution Control in the Petrochemicals Industry. Lewis Publishers, 1987.