Flaherty, S., Ahrens, L., & Guy, R. (1990). Once on this island: A new musical. Alfred Publishing Co..
Lua i Stíl Chicago (17ú heag.)Flaherty, Stephen, Lynn Ahrens, agus Rosa Guy. Once on This Island: A New Musical. Van Nuys, CA: Alfred Publishing Co., 1990.
Lua MLA (9ú heag.)Flaherty, Stephen, et al. Once on This Island: A New Musical. Alfred Publishing Co., 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.