1. The Natural Vegetation of the Island of Tobago, British West Indies
2. Birds of Trinidad and Tobago;Kenefick,2013
3. Trinidad & Tobago—A Birder’s Paradise Caribbean Beat Magazine 2013http://www.discovertnt.com/articles/Trinidad/Trinidad-Tobago-a-Birder-Paradise/394/3/20#axzz56pZxZPJ8
4. Birds of Rice Fields in the Americas