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McCarthy, Kerry, and Magnus Williamson. 2024. Notes on the Petre Gradual. Manuscripts, Materiality, and Mobility: Essays on Late Medieval Music in Memory of Peter Wright, Studi e Saggii. edited by Kerry McCarthy and Magnus Williamson, 83-108. Lucca: Libreria Musicale Italiana. https://www.lim.it/en/miscellaneous-books/6785-manuscripts-materiality-and-mobility-9788855433471.html#/2-tipo_prodotto-book.

Cook, James. 2015. The Style of Walter Frye and an anonymous mass in the Lucca Choirbook. Music and letters, 1-27.