एपीए उद्धरण

Mohan Thekkumbhagam. Aathma niyogathinte Sree Narayanam. Amma Publishers.

शिकागो स्टाइल उद्धरण

Mohan Thekkumbhagam. Aathma Niyogathinte Sree Narayanam. Kollam: Amma Publishers.

एमएलए उद्धरण

Mohan Thekkumbhagam. Aathma Niyogathinte Sree Narayanam. Amma Publishers.