ISBN Standard
ISBN is an International Standard that is published by ISO, the International Organization for Standardization. ISO publish over 19,500 different international standards that are used in a very wide range of areas of technology and business globally.
International Standards are documents that help to ensure that products and services are created and used safely, efficiently and effectively by establishing the requirements and specifications which should be consistently applied in each case.
The International Standard for ISBN is available for a fee direct from ISO.