एपीए उद्धरण

Puntanam & Balakrsnannayar, G. P. S. (1973). Jnanappana. Sahitya Pravarthaka Co-operative Society Ltd.

शिकागो स्टाइल उद्धरण

Puntanam और G Puntanam Smarakasamiti Balakrsnannayar. Jnanappana. Kottayam: Sahitya Pravarthaka Co-operative Society Ltd, 1973.

एमएलए उद्धरण

Puntanam और G Puntanam Smarakasamiti Balakrsnannayar. Jnanappana. Sahitya Pravarthaka Co-operative Society Ltd, 1973.