Padmanabhan,P G. (2018). Nammute Siksha niyamam. SPCS.
Chicago Style aipamenaPadmanabhan,P G. Nammute Siksha Niyamam. Kottayam: SPCS, 2018.
MLA aipamenaPadmanabhan,P G. Nammute Siksha Niyamam. SPCS, 2018.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.