Errors on Norman Mailer pages

There's JS errors when trying to add a Normal Mailer book - The Castle in the Forest (9780394536491). The quick add results in the Add Book button being replaced with Error. Going to the book's page results in two JS errors. I believe the second error (user not defined in jquery.site.js) is cascading off of this mal-formed JS on the page:

var book_edition = {
'id': ,
'isbn': '0394536495',
'pages': 496
};