Rao, D. P. L. (1990). Pollution control handbook. Utility.
Chicago Style aipamenaRao, Diwakar P L. Pollution Control Handbook. Seconderabad: Utility, 1990.
MLA aipamenaRao, Diwakar P L. Pollution Control Handbook. Utility, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.