How do i get bibtex entries from Amazon.com

Has anyone written an interface through which i can get a citation of a book/paper from amazon.com

Thanks for the suggestions from fellow users. I'm updating the questions to detail in more specifics:

• Citeulike.org issue: I used BibTeX "Export from My library" features. However its not that accurate..it cannot extract all meta-data from amazon and complete the bibliographic reference
• Mendeley Desktop : I used http://www.mendeley.com/blog/academic-features/mendeley-bookmarklet-released-one-click-import-from-google-scholar-pubmed-arxiv-acm-ieee-etc/ is a long way round, I want something where I give the URL and it gives me back the bibtex entry

If you use Firefox, the Zotero add-on should be able to store a citation, which you can then export as BibTeX.

For a completely Web based solution with no addons:

Lead2Amazon

Go to http://lead.to/amazon/en/?op=bt put ISBN or title, choose BibTeX output and will look up in Amazon and generate the BibTeX, as a bonus it will contain the ISBN and the Amazon URL.

Tungare's ISBN to BibTeX Converter

Alternative using ISBN only: http://manas.tungare.name/software/isbn-to-bibtex/ it will generate the BibTeX including the Amazon URL.

Ottobib

http://www.ottobib.com, the same but it will not generate the Amazon URL. Can do multiple ISBN searches at a time.

In addition to zotero and citeulike, there is also Mendeley. It allows citation extraction from Amazon via a bookmarklet, and has bibtex export and syncing.