Potter, Keith. 2019. Sketching a New Tonality: A Preliminary Assessment of Steve Reich’s Sketches for Music for 18 Musicians in Telling the Story of This Work’s Approach to Tonality. In: Sumanth Gopinath and Pwyll ap Sion, eds. Rethinking Reich. New York: Oxford University Press, pp. 191-215. ISBN 9780190605292 [Book Section]

ap Sion, Pwyll and Redhead, L. 2014. Introduction: Musical Borrowing and Quotation in the Twentieth and Twenty-first Centuries. Contemporary Music Review, 34(2), pp. 125-127. ISSN 0749-4467 [Article]

ap Sion, Pwyll and Redhead, L, eds. 2014. Musical Borrowing and Quotation in the Twentieth and Twenty-First Centuries, Contemporary Music Review, 33(2). 0749-4467 [Edited Journal]

Potter, Keith S.; ap Sion, Pwyll and Gann, Kyle, eds. 2013. The Ashgate Research Companion on Minimalist and Postminimalist Music. Aldershot: Ashgate. ISBN 9781472402783 [Edited Book]

Potter, Keith; Gann, Kyle and ap Sion, Pwyll. 2013. Introduction: experimental, minimalist, postminimalist? Origins, definitions, communities. In: Keith S. Potter; Kyle Gann and Pwyll ap Sion, eds. The Ashgate Research Companion to Minimalist and Postminimalist Music. Farnham: Ashgate, pp. 1-16. ISBN 9781 409435495 [Book Section]