सहायता:आई एस बी एन

Many Wikipedia articles have International Standard Book Numbers (ISBN) alongside the bibliographical entry for books. Clicking on the linked 10 or 13 digit number allows readers to automatically check to see if that particular book is in a library catalogue, at Google Books, at major booksellers, or other websites.

An example of a bibliographical entry as a reference or a suggestion for further reading would look like this:

• साँचा:refbegin

The ISBN may not have the dashes between numbers and there may be spaces but it works in the same manner. Note that different editions of the same book may have different ISBNs and books published prior to the 1970s do not have ISBNs, unless subsequently reprinted.

इन्हें भी देखें

• Special:BookSources, for manually entering an ISBN

बाहरी कड़ियाँ

• International ISBN Agency—coordinates and supervises the worldwide use of the ISBN system.
• Numerical List of Group Identifiers List of language/region prefixes
• 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.