Karunakaran Nair, P. . .. (1964). Gopika dukham. Sudha Publications.
Chicago Style aipamenaKarunakaran Nair, P. Gopika Dukham. Thiruvananthapuram: Sudha Publications, 1964.
MLA aipamenaKarunakaran Nair, P. Gopika Dukham. Sudha Publications, 1964.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.