I don’t want to appear immodest, but honestly, my book is probably the best source in one volume:
You can also find the laws governing Utah divorce and family law at the Utah State Legislature’s website, particularly (but not exclusively) in these Chapters of the Utah Code:
Utah Code, Title 30, Husband and Wife, Chapter 3. Divorce
And you can learn a lot about how divorce law works in Utah by reading divorce and child custody decisions of the Utah Supreme Court and Utah Court of Appeals.
Utah Family Law, LC | divorceutah.com | 801-466-9277
https://www.quora.com/What-are-the-divorce-laws-in-Utah/answer/Eric-Johnson-311?prompt_topic_bio=1