TemplatesBooks module
Books templates
Default templates the Books module renders, the controller that renders each one and what it receives. A file at the same path in your site repository replaces the platform's.
API & Jobs view
books/backend/api/edit.html
Move
Retrieve a single record and display the edit page for the record
Common variables such as $_url, $_request and $_menu are available too. Global template variables
Override it: create templates/books/backend/api/edit.html in your site repository.