Programmer's Reference Guide for the ATARI 400/800 Computers - David Heriserman

Programmer’s Reference Guide Atari 400 800 Computers David Heiserman

Programmer's Reference Guide for the ATARI 400/800 Computers - David Heriserman

User's Handbook to the Atari 400 / 800 Computers

Atari BASIC cartridge and BASIC Reference Manual for the Atari 400/800 Computers

ATARI BASIC Book for 400 800 Computers 1979 Self Teaching Guide

Your Atari Computer - a guide to Atari 400 / 800 personal computers by Ion Poole

Your Atari Computer a guide to Atari 400 / 800 personal computers by Ian Poole