एपीए उद्धरण

Baby,P.K. (2011). Measuring Values of Air Quality: An Economic Approach to Kerala's Environment. Directorate of Public Relations and Publications.

शिकागो स्टाइल उद्धरण

Baby,P.K. Measuring Values of Air Quality: An Economic Approach to Kerala's Environment. India: Directorate of Public Relations and Publications, 2011.

एमएलए उद्धरण

Baby,P.K. Measuring Values of Air Quality: An Economic Approach to Kerala's Environment. Directorate of Public Relations and Publications, 2011.