6 - 8 Quick Check® 600/800 Series User’s Guide
ANSI - American National Standards Institute, 25 West 43rd Street,
(between 5th and 6th Avenues), 4 floor, New York, NY 10036,
Tel: (212) 642 4900, Fax: (212) 398 0023, http://www.ansi.org/
The Bar Code Book-Reading, Printing and Specification of Bar Code
Symbols
. Roger C. Palmer. Helmers Publishing, Inc., Fourth Edition.
2001, ISBN: 0911261133.
Reading between the lines: an introduction to bar code technology.
Craig K. Harmon and Russ Adams, Helmers Publishing, Inc., Fourth
Edition. 1989, ISBN: 0911261001.
Revolution at the Checkout Counter : The Explosion of the Bar Code.
Stephen A. Brown, Harvard University Press 1997, ISBN:
0674767209.