Cita APA (7th ed.)
Punmia. B. C & Jain, A. K. (1998). Wastewater engineering: Including air pollution (2nd ed.). Laxmi Pub.
Cita Chicago (17th ed.)
Punmia. B. C i Arun Kumar/Jain Jain. Wastewater Engineering: Including Air Pollution. 2nd ed. Kolkata: Laxmi Pub, 1998.
Cita MLA (9th ed.)
Punmia. B. C i Arun Kumar/Jain Jain. Wastewater Engineering: Including Air Pollution. 2nd ed. Laxmi Pub, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.