Daliman, S., Mohd Azmi, N. A. and Alvin Lau Meng Shin (2017) “Implementation of Open Source GIS to Palm Oil Tree Plantation Database: A Case Study in Bukit Kerayong and Bukit Rajah Estate”, Journal of Tropical Resources and Sustainable Science (JTRSS) , 5(3), pp. 121–127. doi: 10.47253/jtrss.v5i3.656.