Christie, A. Postern of fate.
Lua i Stíl Chicago (17ú heag.)Christie, Agatha. Postern of Fate.
Lua MLA (8ú heag.)Christie, Agatha. Postern of Fate.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)