एपीए उद्धरण

Ezhuthachan Thunchathu. (1991). Adhyatma ramayanam. Kerala Sahitya Academi.

शिकागो स्टाइल उद्धरण

Ezhuthachan Thunchathu. Adhyatma Ramayanam. Thrissur: Kerala Sahitya Academi, 1991.

एमएलए उद्धरण

Ezhuthachan Thunchathu. Adhyatma Ramayanam. Kerala Sahitya Academi, 1991.