Williams, David (1989). This Little Piggy Stayed Home: Barlow, Chambers and the Mafia. Perth, Western Australia, Australia: Panorama Books. ISBN0-949864-21-8.
West Australian newspaper: -Transferred to death row, Penang jail (August 1985) and await news of their appeal for clemency (Nov. 1985 - June 1986. 6 Nov. 1985, p. 33; 15 Nov. 1985, p. 33; 18 Nov. 1985, p. 43; 25 Nov. 1985, p. 14; 14 Jan. 1986, p. 11; 11 Feb. 1986, p. 24; 5 June 1986, p. 20; 19 June 1986, p. 1.
West Australian newspaper: The sentences of capital punishment (21 December 1985). Editorial on the death penalty and heroin trading (Dec. 1985), summaries of events (June 1986), their hanging in Kuala Lumpur (7 July 1986) and their involvement in organised drug smuggling (July 1986).
West Australian newspaper: 23 June 1986, pp. 1–9 - summary of case. (They are hanged 7 July 1986). 21 Dec. 1985, p. 8; 23 June 1986, p. 1-9; 8 July 1986, p. 1-2; 9 July 1986, p. 10; 7 May 1987, p. 1
