@book{peter2011singapore, title = {Singapore Biodiversity: An Encyclopedia of the Natural Environment and .Sustainable Development} author = {Peter K. L. Ng, Richard Corlett, Hugh T. W. Tan}, url = {https://books.google.co.za/books?id=D1oW0EquxDAC&dq=+Biodiversity+of+Singapore&lr=&source=gbs_navlinks_s}, year = {2011} }