ISBN13
The ISBN system is administered in the UK and Ireland by the UK ISBN Agency, Midas House, 62 Goldsworth Road, Woking, GU21 6LQ, telephone 0870 777 8712, www.isbn.nielsenbookdata.co.uk.
As from 1 January 2007, the ISBN changed from a 10-digit to a 13-digit identifier. Follow the links below to the latest user manual, ISBN13 implementation guidelines and a useful converter or go to www.isbn-international.org.
ISBN User Manual
(5th edition, January 2007)
ISBN13 Implementation Guidelines
