Google made it easy to embed in a site any book available at Google Book Search. You can add a fully-functional widget using this code:

<script type=”text/javascript” src=”http://books.google.com/books/previewlib.js”></script>
<script type=”text/javascript”>
GBS_insertEmbeddedViewer(‘GkCpLIk7aisC‘,600,500);
</script>

You should replace GkCpLIk7aisC with the corresponding book ID, which can be obtained from the URL. See this example on the post at Google Operating System.

Post from Google Operating System