Ramakrishna Pillai Poovattoor. (1985). Kerala Varma and his works. Anitha.
Chicago Style aipamenaRamakrishna Pillai Poovattoor. Kerala Varma and His Works. Thiruvananthapuram: Anitha, 1985.
MLA aipamenaRamakrishna Pillai Poovattoor. Kerala Varma and His Works. Anitha, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.