What is the best location to locate the comments section in a list page

I am working in a website representing books, where the user can login and read online books through a book viewer and make hi/her own books collections.

I have implemented a commenting system for each individual book in a separated page as usual the comments section will be underneath the book viewer (so far so good, I have no problemin that page). but the client wants the same commenting system to be over the user collection (over a list page). I mean the website member can comment on a book individual or over a bunch of books located in a certain collection.

My problem is: How to locate the comment section in that case? is it underneath the whole collections list? what if I have pagination? one for the books list in that collection, and other one for the comments.

Where is the best location to locate comments in a list that have pagination?

in the here under example I have a so many problems, I have two pagination, I have the comments under the list and if the list will increase the comments will be in the very low position in the page.

From your point of view and experience, how to solve this problem? where is the best location for the comments system?

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