1. Fuel Prices in Brunei Darussalam on Brunei's Energy Day 2010;Abdul Rashid’s Blog,2010
2. Air Quality and Climate Change: A UK Perspective;Air Quality Expert Group,2007
3. Banks' Charges and Corporate Rates;Autoriti Monetari Brunei Darussalam,2019
4. Greenhouse gas emissions from energy systems, comparison and overview;Bauer,2015