Lua APA (7ú heag.)

Lewis, C. (1962). The problem of pain. MacMillan.

Lua i Stíl Chicago (17ú heag.)

Lewis, C.S. The Problem of Pain. New York: MacMillan, 1962.

Lua MLA (9ú heag.)

Lewis, C.S. The Problem of Pain. MacMillan, 1962.

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