Super Charge Your Spectrum Book (David Webb) Sinclair Machine Code Paperback

Introducing Spectrum Machine Code How To Get More Speed - Ian Sinclair - 1983

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

Sinclair ZX Spectrum Basic Programming Manuals, 1st Edition + Intro & 3rd Ed.

An Introduction To Programming The BBC Model B Micro , Penfold , Babani BP139

Sinclair ZX Spectrum BASIC Programming & INTRODUCTION Manuals

Sinclair ZX Spectrum Manual and Games Tips plus Thunderbirds Poster!

20 Programs For The ZX Spectrum : Book : Cambridge Colour Collection