एपीए उद्धरण

Manoharan, T. (1999). Silent valley- whispers of reason. Kerala Forest Department.

शिकागो स्टाइल उद्धरण

Manoharan, T.M. Silent Valley- Whispers of Reason. Thiruvananthapuram: Kerala Forest Department, 1999.

एमएलए उद्धरण

Manoharan, T.M. Silent Valley- Whispers of Reason. Kerala Forest Department, 1999.