Prof. Caprio recommends this book: Randomized Control Trials in the Field of Development
book by Florent Bédécarrats, Isabelle Guérin, and François Roubaud from the Oxford University Press
RCTs are increasingly being used to answer numerous kinds of questions in the field. In fact, in 2019, Abhijit Banerjee, Esther Duflo, and Michael Kremer were awarded the Economics Noble prize for using this approach to answer many different questions concerning global poverty. This book explores the types of questions that can and cannot be answered by RCTs and the ways in which one can employ it in the field to answer numerous kinds of questions. It is written in such a way that it is accessible to both experts and laypeople.
You can purchase the book at this link.