The Anatomy of the Commodore 128.
Advanced Programming Techniques on the Commodore 64, thanks to René Pedersen.
Supercharge your Commodore C64, thanks to René Pedersen.
Melbourtne House Software Projects C64, thanks to René Pedersen.
AMIGA for begyndere (Danish)
Amiga 1200 Problemknuser (Danish)
Commodore 64 Computing, by Ian Sinclair.
Z80 Software Gourmet Guide & COOKBOOK.
The Power of Calc Result for the Commodore 64.