एपीए उद्धरण

Maani,Vettam; Edn. (1972). Malayala Sahithya charitram Prashnothari. Gurunathan publications.

शिकागो स्टाइल उद्धरण

Maani,Vettam; Edn. Malayala Sahithya Charitram Prashnothari. Kottayam: Gurunathan publications, 1972.

एमएलए उद्धरण

Maani,Vettam; Edn. Malayala Sahithya Charitram Prashnothari. Gurunathan publications, 1972.