Coba jelasin Sumber sekunder dari Sejarah Brunei dalam bahasa melayu dong

Ongkili, James P.  "Ancient Chinese Trading Links."  East Malaysia and Brunei.  Ed.  Wendy Hutton.  Tuttle Publishing, 2001.

Wright, Leigh.  "Brunei: An Historical Relic."  Journal of the Hong Kong Branch of the Royal Asiatic Society.  Vol. 17 (1977).