Immers, Richard Inside commodore dos / by Richard Immers and Gerald G. Neufeld ; technical illustrations by Diane M. Corralejo. - Chartworth, California : Datamost, c1984. - 508 p. : ill. ; 25 cm. Includes index. ISBN: 0835930912 Subjects--Topical Terms: Commodore computers--Programming. LC Class. No.: QA76.8 / .I46 1984