20 Best Programs for the ZX Spectrum - Andrew Hewson - Rare Book

Delving Deeper Into Your ZX Spectrum Book (Dilwyn Jones) Interface Publications

Sinclair ZX Spectrum Manual and Games Tips plus Thunderbirds Poster!

Usborne Computer Book - Experiments with Your Computer Acorn ZX81 CBM Spectrum

Sinclair ZX Spectrum BASIC Programming & INTRODUCTION Manuals

ZX Spectrum Plus 2 User Guide Manual book 128K +2

Over The Spectrum Book. ZX Spectrum Programming Book.

“Not Only”30 Programs For The Sinclair ZX81 1K Book - Melbourne House Publishers