Wurmbrand, M. (1972). Christ or the red flag. Hodder and Stoughton.
Lua i Stíl Chicago (17ú heag.)Wurmbrand, Michael. Christ or the Red Flag. London: Hodder and Stoughton, 1972.
Lua MLA (9ú heag.)Wurmbrand, Michael. Christ or the Red Flag. Hodder and Stoughton, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.