एपीए उद्धरण

Higgins, J. (2008). Eco- Engineered Bioreactors: Advanced Natural Wastewater Treatment. CRC Press.

शिकागो स्टाइल उद्धरण

Higgins, James. Eco- Engineered Bioreactors: Advanced Natural Wastewater Treatment. Boca raton: CRC Press, 2008.

एमएलए उद्धरण

Higgins, James. Eco- Engineered Bioreactors: Advanced Natural Wastewater Treatment. CRC Press, 2008.