Cita APA (7th ed.)
Patra, M. N., & Singha, R. K. (2013). Basic environmental engineering and elementary biology. Aryan Publishing House.
Cita Chicago (17th ed.)
Patra, Monindra Nath, i Rahul Kumar Singha. Basic Environmental Engineering and Elementary Biology. Kolkata: Aryan Publishing House, 2013.
Cita MLA (9th ed.)
Patra, Monindra Nath, i Rahul Kumar Singha. Basic Environmental Engineering and Elementary Biology. Aryan Publishing House, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.