Reddit mentions of Pair Programming Illuminated

For testing, I liked this one: https://www.amazon.com/Growing-Object-Oriented-Software-Guided-Tests/dp/0321503627

For version control, continuous integration, continuous delivery, this was a good read: https://www.amazon.com/Continuous-Delivery-Deployment-Automation-Addison-Wesley/dp/0321601912

There are many extreme programming books that briefly talk about pair programming. If you want a book specifically on pair programming only then there is this: https://www.amazon.com/Pair-Programming-Illuminated-Laurie-Williams/dp/0201745763

There are thousands of books out there for learning various topics of software engineering.