The Art of Computer Programming: Volume 1, Third Edition Updated and Revised, Volume 2, Third Edition Updated and Revised, Volume 3, Second Edition Updated and Revised, Volume 4a, Extended and Refined :
Personal Software 28 : Gruppo Editoriale Jackson : Free Download, Borrow, and Streaming : Internet Archive
Commodore Computer Club (Italian) : Free Texts : Free Download, Borrow and Streaming : Internet Archive