Jabatan Mufti Kerajaan, Jabatan Perdana Menteri, Negara Brunei Darussalam, 2016
Buku Teks
Gibson, William E., author
McGraw-Hill, 1971
Buku Teks
edited by Kevin Dowd and Mervyn K. Lewis
Macmillan, 1992
Buku Teks
Jabatan Penerangan, 1995
Buku Teks
Rifki Ismail, author
John Wiley & Sons, 2013
Buku Teks