APA (7 वां संस्करण) प्रशस्ति पत्र

Yesudas, R. N. (1977). British policy in Travancore, 1805-1859. Kerala Historical Society : copies can be had from Santha Yesudas.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Yesudas, R. N. British Policy in Travancore, 1805-1859. Trivandrum: Kerala Historical Society : copies can be had from Santha Yesudas, 1977.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Yesudas, R. N. British Policy in Travancore, 1805-1859. Kerala Historical Society : copies can be had from Santha Yesudas, 1977.