Prof S Sivadas. Puthiya Sasthra Viseshangal. DC Books.
Chicago Edition CitationProf S Sivadas. Puthiya Sasthra Viseshangal. Kottayam: DC Books.
MLA Edition CitationProf S Sivadas. Puthiya Sasthra Viseshangal. DC Books.
Warning: These citations may not always be 100% accurate.