एपीए उद्धरण

Radhakrishnan, S. (1970). Ulppirivukkal. Sahitya Pravarthaka Co-operative Society Ltd.

शिकागो स्टाइल उद्धरण

Radhakrishnan, S. Ulppirivukkal. Kottayam: Sahitya Pravarthaka Co-operative Society Ltd, 1970.

एमएलए उद्धरण

Radhakrishnan, S. Ulppirivukkal. Sahitya Pravarthaka Co-operative Society Ltd, 1970.