Piratheepa, V., N. W. Chan, and G. Suriati. “Towards the Ecotourism Development: Opportunities and Challenges in Delft Island, Jaffna District- Sri Lanka: Ke Arah Pembangunan Ekopelancongan: Peluang Dan Cabaran Di Pulau Delft, Daerah Jaffna, Sri Lanka”. GEOGRAFI, vol. 9, no. 1, June 2021, pp. 24-40, doi:10.37134/geografi.vol9.1.2.2021.