Gopalakrishnan K. (1999). Kulapathikal. Vallathol Vidyapeedham.
Chicago Edition CitationGopalakrishnan K. Kulapathikal. Sukapuram: Vallathol Vidyapeedham, 1999.
MLA Edition CitationGopalakrishnan K. Kulapathikal. Vallathol Vidyapeedham, 1999.
Warning: These citations may not always be 100% accurate.