B. A. Hamzah. (1980). Oil and economic development issues in Brunei. Institute of Southeast Asian Studies.
Dyfyniad Arddull ChicagoB. A. Hamzah. Oil and Economic Development Issues in Brunei. Singapore: Institute of Southeast Asian Studies, 1980.
Dyfyniad MLAB. A. Hamzah. Oil and Economic Development Issues in Brunei. Institute of Southeast Asian Studies, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.