Purdy, S. (2021). Flop musicals of the twenty first century (Second edition.). Routledge.
Lua i Stíl Chicago (17ú heag.)Purdy, Stephen. Flop Musicals of the Twenty First Century. Second edition. Abingdon, Oxon ; New York, NY: Routledge, 2021.
Lua MLA (9ú heag.)Purdy, Stephen. Flop Musicals of the Twenty First Century. Second edition. Routledge, 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.