Bates, M. (1971). Manushyan prakrithiyil. State Institute of Languages.
Chicago Style aipamenaBates, Marston. Manushyan Prakrithiyil. Trivandrum: State Institute of Languages, 1971.
MLA aipamenaBates, Marston. Manushyan Prakrithiyil. State Institute of Languages, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.