Koller, C. W. (1962). Expository preaching without notes. Baker.
Lua i Stíl Chicago (17ú heag.)Koller, Charles W. Expository Preaching Without Notes. Michigan: Baker, 1962.
Lua MLA (9ú heag.)Koller, Charles W. Expository Preaching Without Notes. Baker, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.