Annual report - Tongkah Holdings Berhad (Kuala Lumpur : Tongkah Holdings Berhad, 1988)
1995 onwards, the annual report is also available in Bahasa Malaysia
Library's holdings : 1988, 1988, 1989,1989, 1992, 1992, 1993, 1994, 1994, 1995, 1995, 1997, 1997, 1998, 1998, 1999, 1999, 2000, 2000-