Sukumar. (2012). Chiripusthakam. Prabath book house.
Chicago Style aipamenaSukumar. Chiripusthakam. Thiruvananthapuram: Prabath book house, 2012.
MLA aipamenaSukumar. Chiripusthakam. Prabath book house, 2012.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.