What to read after Historical Dictionary of Brunei Darussalam?

The modern state of Negara Brunei Darussalam ('Abode of Peace') achieved its independence from the British in 1984 after 96 years of existence as a British protectorate. The state is currently run by Sultan Hassanal Bolkiah who is the 29th sultan from his lineage and is among the world's richest men. Brunei is well known for its wealth and as a major crude oil and natural gas producer. The second edition of the Historical Dictionary of Brunei Darussalam substantially updates the first edition through a chronology, an introductory essay, a bibliography, and hundreds of cross-referenced dictionary entries on important persons, places, events, and institutions, as well as significant political, economic, social, and cultural aspects.