Karim, N. (1979). Sahakarana Niyamannal. State Institute of languages.
Chicago Style aipamenaKarim, N.A. Sahakarana Niyamannal. Trivandrum: State Institute of languages, 1979.
MLA aipamenaKarim, N.A. Sahakarana Niyamannal. State Institute of languages, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.