previous – next navigation on pages

I’m working on a site where we’ve got a lot of free books available online. I want each section of the book to be a “page” in WordPress. That is working fine, and I’ve nested sections into their appropriate chapters, added page order coding, etc. to make it all work well.

Now I would like to add “previous page”/”next page” navigation to the site, so that a user can go forwards and backwards in the book.

Is there a way to add forwards/backwards navigation for users to move through pages on a WordPress site?

Note: this is different from previous & next post navigation, and it is not date-based, but page-order-based.

Theh site-in-progress can be seen at:

https://healthinsuranceinfo.net/getinsured/mississippi

Thanks for advice!

-Sara