Books and essays by Andrew Shenton can be purchased directly from the publishers and from online stores such as amazon.com
Arvo Pärt’s Resonant Texts: Choral and Organ Music 1956-2015
Christian Sacred Music in the Americas
Olivier Messiaen’s Systen of Signs
The Cambridge Companion to Arvo Pärt
The Mirror of Infinite Beauty: How the Musics of the World’s Religions Reflect God