Permalinks, also referred to as persistent links, provide a permanent static link to a specific piece of content on a webpage.
A permalink can link directly to
Permalinks are useful because URLs (website links) tend to break over time, as sites are updated and content is moved around.
To find the permalinks for Proquest ebooks
To find the permalinks for EBSCO ebooks and full-text articles
O'Reilly's books do not have specific permalinks or persistent links and have short URLs which go directly to individuals books and chapters.
After finding the ebook in the catalogue