Annual report / 
Tongkah Holdings Berhad 
 - Kuala Lumpur :  Tongkah Holdings Berhad,  1988- 
<br/><br/> 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-