MC6809 Datasheet Motorola; 36 pages; 1983.
MC6809E Datasheet Motorola; 34 pages.
Motorola 8-bit Microprocessors Data Book Motorola; 1182 pages; 1981.
MC6809-MC6809E Microprocessor Programming Manual Motorola; 220 pages; 1981.
6809 Assembly Language Programming 1st Ed; Lance Leventhal; 579 pages; 1981; ISBN 0-931988-35-7.
The MC6809 Cookbook 1st Ed; Carl Warren; 180 pages; 1980; ISBN 0-8306-9683-0.
A Microprocessor for the Revolution: The 6809 Terry Ritter & Joel Boney (co-designers of 6809); BYTE magazine; Jan-Feb 1979.
MC6809 Reference Card Motorola; 16 pages; 1981.
6809/6309 Reference Card Chris Lomont; 10 pages; 2007.
6809 Assembly Language Programming by Lance A. Leventhal
Assembly Language Subroutines for the 6809 by Lance A. Leventhal