Usha, O. V. (2009). Enthayirunnu peiru. Melinda Books.
Chicago Style aipamenaUsha, O. V. Enthayirunnu Peiru. Thiruvananthapuram: Melinda Books, 2009.
MLA aipamenaUsha, O. V. Enthayirunnu Peiru. Melinda Books, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.