N Gopinathan Nair. (1975). Descriptive Grammar of Early Manipravala Works. University of Kerala.
Chicago Style aipamenaN Gopinathan Nair. Descriptive Grammar of Early Manipravala Works. Trivandrum: University of Kerala, 1975.
MLA aipamenaN Gopinathan Nair. Descriptive Grammar of Early Manipravala Works. University of Kerala, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.