Raghavan, . P. (1985). Kerala Patrapravarthana Charitram. Kerala Sahitya Academy.
Chicago Edition CitationRaghavan, Putuppali. Kerala Patrapravarthana Charitram. Trichur: Kerala Sahitya Academy, 1985.
MLA引文Raghavan, Putuppali. Kerala Patrapravarthana Charitram. Kerala Sahitya Academy, 1985.
警告:這些引文格式不一定是100%准確.