APA (7 वां संस्करण) प्रशस्ति पत्र

of, K. G. (1980). Kerala's economic progress in figures: 1980. Directorate of Economics and Statistics.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

of, Kerala. Government. Kerala's Economic Progress in Figures: 1980. Directorate of Economics and Statistics, 1980.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

of, Kerala. Government. Kerala's Economic Progress in Figures: 1980. Directorate of Economics and Statistics, 1980.