Borup, M. B., & Middlebrooks, E. J. (1987). Pollution control in the petrochemicals industry. Lewis Publishers.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումBorup, M. Brett, and E. Joe Middlebrooks. Pollution Control in the Petrochemicals Industry. Chelsea, Mich: Lewis Publishers, 1987.
MLA (9րդ խմբ.) ՄեջբերումBorup, M. Brett, and E. Joe Middlebrooks. Pollution Control in the Petrochemicals Industry. Lewis Publishers, 1987.