Velappan, K. (1994). Adivasikalum adivasi bhashakalum. State Institute of Languages.
Chicago Edition CitationVelappan, K. Adivasikalum Adivasi Bhashakalum. Thiruvananthapuram: State Institute of Languages, 1994.
MLA Edition CitationVelappan, K. Adivasikalum Adivasi Bhashakalum. State Institute of Languages, 1994.
Warning: These citations may not always be 100% accurate.