Atari Basic Reference Guide for Experienced Programmers Vintage Manual

Atari Basic Reference Guide for Experienced Programmers Vintage Computers

COMPUTE!'s Atari ST Programmer's Guide, very good condition

Vintage Atari 400/800 Basic Reference Manual

Atari ST BASIC Quick Reference Guide

ATARI ST BASIC Training Guide by Abacus Software

Programmer’s Reference Guide Atari 400 800 Computers David Heiserman

COMPUTE!'s Second Book of Atari 400/800 BASIC Programmer’s Guide 1982