Παραπομπή APA

Rao, D. P. L. (1990). Pollution control handbook. Utility.

Παραπομπή Chicago Style

Rao, Diwakar P L. Pollution Control Handbook. Seconderabad: Utility, 1990.

Παραπομπή MLA

Rao, Diwakar P L. Pollution Control Handbook. Utility, 1990.