एपीए उद्धरण

Sreedharan, P. (2003). Sankhumudrayulla val. Sankeerthanam Publications.

शिकागो स्टाइल उद्धरण

Sreedharan, Perumpadavam. Sankhumudrayulla Val. Kollam: Sankeerthanam Publications, 2003.

एमएलए उद्धरण

Sreedharan, Perumpadavam. Sankhumudrayulla Val. Sankeerthanam Publications, 2003.