Wilson, K., & Segal, J. (2006). Sleepyhead. Margaret K. McElderry Books.
Lua i Stíl Chicago (17ú heag.)Wilson, Karma, agus John Segal. Sleepyhead. New York: Margaret K. McElderry Books, 2006.
Lua MLA (8ú heag.)Wilson, Karma, agus John Segal. Sleepyhead. Margaret K. McElderry Books, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.