Barth, K. (1941). This Christian cause: (A letter to Great Britain from Switzerland). Macmillan Co.
Lua i Stíl Chicago (17ú heag.)Barth, Karl. This Christian Cause: (A Letter to Great Britain from Switzerland). New York: Macmillan Co, 1941.
Lua MLA (9ú heag.)Barth, Karl. This Christian Cause: (A Letter to Great Britain from Switzerland). Macmillan Co, 1941.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.