Gaya APA

Y, A, Q, K., Elkamel, A. (2010). Planning and Integration of Refinery and Petrochemical Operations . Germany: Wiley-vch.

Gaya MLA

Y, Al-, Qahtani,, Khalid., Elkamel, Ali. "Planning and Integration of Refinery and Petrochemical Operations". Germany: Wiley-vch, 2010. Text.