N C E R T. (1990). Vaidyuthi pravruthiyil. State Institute of Languages.
Chicago Edition CitationN C E R T. Vaidyuthi Pravruthiyil. Thiruvananthapuram: State Institute of Languages, 1990.
Cita MLAN C E R T. Vaidyuthi Pravruthiyil. State Institute of Languages, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.