APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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