Christie, A. Best detective stories (2a ed.).
Lua i Stíl Chicago (17ú heag.)Christie, Agatha. Best Detective Stories. 2a ed.
Lua MLA (8ú heag.)Christie, Agatha. Best Detective Stories. 2a ed.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.