Lua APA (7ú heag.)

CHRISTIE, A. (2002). BLACK COFFEE. HARPERCOLLINS PUBLISHERS.

Lua i Stíl Chicago (17ú heag.)

CHRISTIE, AGATHA. BLACK COFFEE. LONDON: HARPERCOLLINS PUBLISHERS, 2002.

Lua MLA (9ú heag.)

CHRISTIE, AGATHA. BLACK COFFEE. HARPERCOLLINS PUBLISHERS, 2002.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.