Collier, D. (2012). Confined space. Touchstone.
Lua i Stíl Chicago (17ú heag.)Collier, Deryn. Confined Space. New York: Touchstone, 2012.
Lua MLA (8ú heag.)Collier, Deryn. Confined Space. Touchstone, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.