Narayanan P M. (2008). Irupatham noottantinte ithihasam ezhuthu, vayana, punarvayana. Vallathol Vidyapeetham.
Chicago Edition CitationNarayanan P M. Irupatham Noottantinte Ithihasam Ezhuthu, Vayana, Punarvayana. Edapal: Vallathol Vidyapeetham, 2008.
MLA Edition CitationNarayanan P M. Irupatham Noottantinte Ithihasam Ezhuthu, Vayana, Punarvayana. Vallathol Vidyapeetham, 2008.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.