Help:ISBN links

For a book with ISBN e.g. 0131103628, Special:Booksources/0131103628 gives the text of MediaWiki:Booksourcetext and links regarding the book according to the value of $wgBookstoreListEn in Language.php, currently: /* private */ $wgBookstoreListEn = array(	"AddALL" => "http://www.addall.com/New/Partner.cgi?query=$1&type=ISBN",	"PriceSCAN" => "http://www.pricescan.com/books/bookDetail.asp?isbn=$1",	"Barnes & Noble" => "http://shop.barnesandnoble.com/bookSearch/isbnInquiry.asp?isbn=$1",	"Amazon.com" => "http://www.amazon.com/exec/obidos/ISBN=$1" );

Alternative
Use a template like Template:ISBN allowing ISBN 193151447X to produce something like:

ISBN 193151447X

However, often a separate page would be desirable. This can be done, but requires a page like 193151447X for every book. Those pages can call Template:Bk, so that they only have to contain.