The Bar Code Book: Fifth Edition - A Comprehensive Guide To Reading, Printing, Specifying, Evaluating, And Using Bar Code and Other Machine-Readable Symbols

Bought this because it was the only reference that I could actually find! Turns out that is an excellent book which did all I needed. Being dated 2007 (Fifth edition) it obviously now need another revision, however, it still is the best there is.Surprisingly for a book bought as and intended as a reference it is very, very readable as the author has a clear, easy style and an obvious enthusiasm for his subject matter.Do have to be careful of the odd Americanisms, misunderstanding of which, can subtly alter the meaning of the text if you are a Brit and are not careful. Very, very minor problem though.

It is a great reference on the topic