Believe it is called "The Making of Return of the Jedi" (haha, I wasn't just being non-specific). Here's an amazon link. I believe there are some online copies floating around on various sites as well.
Rinzler discusses this along with the director's guild stuff in his Making of Book. The guild would have been a problem if they used Kershner, but he wanted to do his own thing after Empire. https://www.amazon.com/Making-Star-Wars-Return-Jedi/dp/0345511468
Interestingly one of the reasons they went with Marquand, a tv director, is similar to the problems Disney is having now. They wanted someone competent who could basically do what George wanted. In television, the director is a hired gun who is executing the vision of the executive producer or show runner. Think of Kathleen Kennedy as the show runner for a star wars tv series. In film, even back then, directors expect to have more control of the vision.
I think there's a quote from George in Rinzler's book making this comparison.