Cita APA

Khanna,DR, & Khanna, D. R. (2013). Environmental technology. Daya&Astral.

Chicago Edition Citation

Khanna,DR, i Dev Raj Khanna. Environmental Technology. Newdelhi: Daya&Astral, 2013.

Cita MLA

Khanna,DR, i Dev Raj Khanna. Environmental Technology. Daya&Astral, 2013.

Atenció: Aquestes cites poden no estar 100% correctes.