1. Abdul Aziz Umar, Begawan Pehin Udana Hj Awang. 1992. Melayu Islam Beraja sebagai falsafah negara Brunei Darussalam [Malay Islamic monarchy reigns as the philosophy of Brunei Darussalam]. In Sumbangsih UBD: Esei-esei mengenai negara Brunei Darussalam [UBD contributions: Essays on Brunei Darussalam], ed. Hj Abu Bakar bin Hj Apong, 1–21. Gadong: Akademi Pengajian Brunei, Universiti Brunei Darussalam.
2. Agger, Ben. 1998. Critical social theories: An introduction. Boulder, CO: Westview Press.
3. Allen, Harold B. 1971. Principles of informant selection. American Speech 46(1/2): 47–51.
4. Ang, Ien. 2001. On not speaking Chinese: Living between Asia and the West. London: Routledge.
5. Atkinson, Rowland, and John Flint. 2001. Accessing hidden and hard-to-reach populations: Snowball research strategies. Social Research Update 33(1): 1–4.