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पंक्ति 1:
{{for|how to add an ISBN to an article|Wikipedia:ISBN}}
{{reader help}}
Many Wikipedia articles have [[International Standard Book Number]]s (ISBN) alongside the [[Bibliography|bibliographical]] entry for books. Clicking on the [[hyperlink|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:
:*{{refbegin}}{{Cite book
| last = Carr
| first = Edward Hallett
| title = What is history? : the George Macauley Trevelyan lectures delivered in the University of Cambridge, January-March 1961
| publisher = Penguin Books
| isbn = 0-14-020652-3
| location = Harmondsworth; Ringwood
| date = 1972
}}
{{refend}}
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.
==See also==
*[[Special:BookSources]], for manually entering an ISBN
==External links==
* [http://www.isbn-international.org International ISBN Agency]—coordinates and supervises the worldwide use of the ISBN system.
* [http://www.isbn-international.org/page/ranges Numerical List of Group Identifiers] List of language/region prefixes
* [http://www.isbn.org/converterpub.asp Free conversion tool: ISBN-10 to ISBN-13 & ISBN-13 to ISBN-10] from the [http://www.isbn.org/ ISBN agency]. Also shows correct hyphenation & verifies if ISBNs are valid or not.
[[Category:Reader help]]
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