एपीए उद्धरण

Sreedharan, P. (2007). Ente hridayathinte udama. Sankeerthanam Publications.

शिकागो स्टाइल उद्धरण

Sreedharan, Perumpadavam. Ente Hridayathinte Udama. Kollam: Sankeerthanam Publications, 2007.

एमएलए उद्धरण

Sreedharan, Perumpadavam. Ente Hridayathinte Udama. Sankeerthanam Publications, 2007.