Doherty, P. C. (1994). The song of a dark angel. Headline.
Lua i Stíl Chicago (17ú heag.)Doherty, P. C. The Song of a Dark Angel. London: Headline, 1994.
Lua MLA (8ú heag.)Doherty, P. C. The Song of a Dark Angel. Headline, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.