Prestel Customer Handbook And startup directory

Atari Explorer Magazine, March April 1989

APPLE Service Technical Procedures – Peripheral Interface Guide (March 1989)

Page 6 Atari User Issue - Feb/March 1989 - retro gaming and computing

MacUser Magazine - March 1989, Vol. 5, No. 3

Byte Magazine March 1989

Amiga World Magazine March 1989 Hardware Bash! 245 Amiga Devices & Addons

ICPUG Magazine Vol. 11 No. 2 (March/April 1989) – Commodore Users Group