Peter K. L. Ng (2000): "Development and future direction of biodiversity collections in Southeast Asia", Raffles Museum of Biodiversity Research, 16 de xuño de 2000. [1]Arquivado 13 de febreiro de 2007 en Wayback Machine..
Peter K. L. Ng (2000): "Development and future direction of biodiversity collections in Southeast Asia", Raffles Museum of Biodiversity Research, 16 de xuño de 2000. [1]Arquivado 13 de febreiro de 2007 en Wayback Machine..