एपीए उद्धरण

Nirupama Tyagi. (2014). Agricultural chemistry. Black Prints.

शिकागो स्टाइल उद्धरण

Nirupama Tyagi. Agricultural Chemistry. New Delhi: Black Prints, 2014.

एमएलए उद्धरण

Nirupama Tyagi. Agricultural Chemistry. Black Prints, 2014.