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.