Palmer, R. C. (2007). The bar code book: A comprehensive guide to reading, printing, specifying, evaluating, and using bar code and other machine-readable symbols (5. ed., [revised, updated, and expanded].). Trafford Publ.
Chicago-Zitierstil (17. Ausg.)Palmer, Roger C. The Bar Code Book: A Comprehensive Guide to Reading, Printing, Specifying, Evaluating, and Using Bar Code and Other Machine-readable Symbols. 5. ed., [revised, updated, and expanded]. Victoria, BC, Canada: Trafford Publ, 2007.
MLA-Zitierstil (9. Ausg.)Palmer, Roger C. The Bar Code Book: A Comprehensive Guide to Reading, Printing, Specifying, Evaluating, and Using Bar Code and Other Machine-readable Symbols. 5. ed., [revised, updated, and expanded]. Trafford Publ, 2007.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.