Gopimani, R. (1980). Keralattile Karakrsi. State Institute of Languages.
Chicago Style aipamenaGopimani, R. Keralattile Karakrsi. Trivandrum: State Institute of Languages, 1980.
MLA aipamenaGopimani, R. Keralattile Karakrsi. State Institute of Languages, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.