Manoharan, T. M. (1999). Silent valley whispers of reason. Kerala forest department.
Citación estilo ChicagoManoharan, T. M. Silent Valley Whispers of Reason. Thiruvananthapuram: Kerala forest department, 1999.
Cita MLAManoharan, T. M. Silent Valley Whispers of Reason. Kerala forest department, 1999.
Warning: These citations may not always be 100% accurate.