Vasudevan Pillai,Vayala. (1975). Viswadarsanam. National Books Stall.
Chicago Edition CitationVasudevan Pillai,Vayala. Viswadarsanam. Kottayam: National Books Stall, 1975.
MLA Edition CitationVasudevan Pillai,Vayala. Viswadarsanam. National Books Stall, 1975.
Warning: These citations may not always be 100% accurate.