Curtiss, U. (1976). Dig a little deeper. Macmillan.
Lua i Stíl Chicago (17ú heag.)Curtiss, Ursula. Dig a Little Deeper. London: Macmillan, 1976.
Lua MLA (8ú heag.)Curtiss, Ursula. Dig a Little Deeper. Macmillan, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.