From the back cover:

"Author Nicola Giampietro is an official of the Congregation for Divine Worship and the Discipline of the Sacraments."
“Nicola Giampietro’s book on Cardinal Ferdinando Antonelli and the developments of the liturgical reform from 1948 to 1970 presents views that raise questions and provide considerable material for discussion about the liturgical reform before and after the Second Vatican Council.”
— Cardinal Joseph Ratzinger, La Maison-Dieu, 2002
“This study...helps us to understand the complex inner workings of the liturgical reform prior to and immediately following the Council...[and] would help us to see another side of the otherwise over-euphoric presentations of the conciliar reform by other contemporary authors....The publication in English of this interesting study would, I am sure, contribute greatly to the ongoing debate on the post-conciliar liturgical reforms.”
—Albert Malcolm Ranjith, Archbishop of Colombo Former Secretary, Congregation for Divine Worship and the Discipline of the Sacraments