Parameswara Iyer, U. S. (1930). Umakeralam: Bhasha Mahakavyam (14th ed.).
Chicago Style aipamenaParameswara Iyer, Ulloor S. Umakeralam: Bhasha Mahakavyam. 14th ed. 1930.
MLA aipamenaParameswara Iyer, Ulloor S. Umakeralam: Bhasha Mahakavyam. 14th ed. 1930.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.