Saya mau tau Rujukan dari International Standard Book Number. Jelaskan dalam bahasa melayu

Description of the ISBN to EAN upgrade process at bookweb.org

International ISBN Agency—coordinates and supervises the worldwide use of the ISBN system.

Numerical List of Group Identifiers  List of language/region prefixes

Khas:Booksources, Wikipedia's ISBN search page.

Free conversion tool: ISBN-10 to ISBN-13 & ISBN-13 to ISBN-10 from the ISBN agency. Also shows correct hyphenation & verifies if ISBNs are valid or not.

RFC 3187  Using International Standard Book Numbers as Uniform resource names (URN)