"The Fifth Discipline" by Peter Senge. This is a classic text that also covers the mental model side of the shift from managing people to managing flow.
"Team Topologies" by Skelton and Pais. Another classic on team structure as it relates to flow of value.
And well, have to mention my little book, "Agile V2 Coach's Field Manual" available on Amazon. Hardcover only. I need to write a rev, but still holds up regarding the concept of codifying behaviors into a delivery system, thus cutting down on politics, finger-pointing, unethical decision-making, and other crap that represents the legacy people-management model. Quick read.
Lot more books available. This is a very rich area of study that's been around since people have been trying to figure out how to get out of each other's way for better outcomes.