Krishna Pillai, C. (1990). Changampuzhayute padya kruthikal.
Chicago Style aipamenaKrishna Pillai, Changampuzha. Changampuzhayute Padya Kruthikal. Kottayam, N B S, 1990.
MLA aipamenaKrishna Pillai, Changampuzha. Changampuzhayute Padya Kruthikal. 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.