Lua APA (7ú heag.)

Curtiss, U. R. (1979). The menace within. Macmillan.

Lua i Stíl Chicago (17ú heag.)

Curtiss, Ursula Reilly. The Menace Within. London: Macmillan, 1979.

Lua MLA (8ú heag.)

Curtiss, Ursula Reilly. The Menace Within. Macmillan, 1979.

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