Notes
- 1997 . The Nation (Bangkok) , April 2 and 3
- 1997 . The Nation (Bangkok) , July 7 : 2
- 1996 . The Nation (Bangkok) , September 15 : 1
- 1987 . A Memoir of His Majesty King Bhumibol Adulyadej of Thailand , 52 Bangkok : The Office of His Majesty's Principal Private Secretary .
- 1997 . The Nation , March 15 : 1