What does “ISBN” stand for when referencing books?”
International Standard Book Number From Wikipedia, the free encyclopedia (Redirected from ISBN) The International Standard Book Number, or ISBN (sometimes pronounced [ˈɪzbən]), is a unique[1] identifier for books, intended to be used commercially. The ISBN system was created in the United Kingdom in 1966 by the booksellers and stationers WH Smith and was originally a nine digit code called Standard Book Numbering or SBN (still used in 1974). It was adopted as international standard ISO 2108 in 1970. A similar identifier, the International Standard Serial Number (ISSN), is used for periodical publications such as magazines. From January 1, 2007, ISBNs are thirteen digits long.[2] The TC 46/SC 9 is responsible for the standard.