Savage, Andrew J.P.; Ashton, Peter S (March 1983). "The Population Structure of the Double Coconut...etc". Biotropica. 15 (1): 1. doi:10.2307/2387992. JSTOR2387992.
Savage, Andrew J.P.; Ashton, Peter S (March 1983). "The Population Structure of the Double Coconut...etc". Biotropica. 15 (1): 1. doi:10.2307/2387992. JSTOR2387992.