Cita APA (7th ed.)
Rao, P. (2002). Environmental engineering (3rd ed.). Prentice-Hall.
Cita Chicago (17th ed.)
Rao, P.Venugopala. Environmental Engineering. 3rd ed. New Delhi: Prentice-Hall, 2002.
Cita MLA (9th ed.)
Rao, P.Venugopala. Environmental Engineering. 3rd ed. Prentice-Hall, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.