Search Ebook Library for the book you want to link to and click the title.
On the next page, highlight and copy the six digit "Product ID". (see image below)
Please note: Right-clicking is disabled on this page, so you won't be able to copy by right-clicking and selecting "Copy". Other methods of copying will still work as usual.
Click image to enlarge.
Paste this link into the "Product ID" box below.
Click "Create Link".
Copy the link in the "Complete Link" box and paste it into your document or webpage.