Narayana Pillai, P. K. (1988). Prayogadeepika. Dept. of Cultural Publications.
Chicago Style aipamenaNarayana Pillai, P K. Prayogadeepika. Trivandrum: Dept. of Cultural Publications, 1988.
MLA aipamenaNarayana Pillai, P K. Prayogadeepika. Dept. of Cultural Publications, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.