Gerard, J. (1922). Does the end justify the means? (New and rev. ed.). Catholic Truth Society.
Lua i Stíl Chicago (17ú heag.)Gerard, John. Does the End Justify the Means? New and rev. ed. London: Catholic Truth Society, 1922.
Lua MLA (8ú heag.)Gerard, John. Does the End Justify the Means? New and rev. ed. Catholic Truth Society, 1922.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.