1. Building Relationships Creating Value Integrated Annual Report 2019,2019
2. Performance analysis of hybrid photovoltaic/diesel energy system under Malaysian conditions;Lau;Energy,2010
3. All 182 unnamed Sabah islands given names. Borneo Post Online 12 (April) 2011. https://www.theborneopost.com/2011/04/12/all-182-unnamed-sabah-islands-given-names/.
4. Household Income, Poverty and Household Expenditure, Economic Planning Unit, Prime Minister's Department, 2019.[Online]. Available: https://www.epu.gov.my/ms/statistik-sosioekonomi/pendapatan-isi-rumah-kemiskinan-dan-perbelanjaan-isi-rumah.
5. The potential and status of renewable energy development in Malaysia;Abdullah;Energies,2019