Legal provisions for mandatory referendums at national level

Brunei Darussalam
Constitution of Brunei Darussalam
http://www.wipo.int/wipolex/en/details.jsp?id=7797
Direct Democracyin Asia: A Reference Guide to the Legislation and Practice (2005), page. 87 on Brunei.
http://www.docstoc.com/docs/74258274/Direct-Democracy-in-Asia
Constitutionalism in SoutheastAsia (KAS, 2008)
http://www.kas.de/wf/doc/kas_21147-1522-1-30.pdf?110815050450
The 1959 Constitution did notassist any democratic element to take root in the political governance in Brunei. Bruneiremained an absolute monarchy,unconstrained by parliamentary institutions, or the judiciary.