APA (7th ed.) Citation

Hamzah, B. A. (1991). The oil sultanate: Political history of oil in Brunei Darussalam (1. publ.). Mawaddah Enterprise.

Chicago Style (17th ed.) Citation

Hamzah, B. A. The Oil Sultanate: Political History of Oil in Brunei Darussalam. 1. publ. Kuala Lumpur: Mawaddah Enterprise, 1991.

MLA (9th ed.) Citation

Hamzah, B. A. The Oil Sultanate: Political History of Oil in Brunei Darussalam. 1. publ. Mawaddah Enterprise, 1991.