Manoharan, T. (1999). Silent valley- whispers of reason. Kerala Forest Department.
Chicago-stil citatManoharan, T.M. Silent Valley- Whispers of Reason. Thiruvananthapuram: Kerala Forest Department, 1999.
MLA-referensManoharan, T.M. Silent Valley- Whispers of Reason. Kerala Forest Department, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.