Powers,Bruce P. (1979). Christian leadership. Broadman.
Lua i Stíl Chicago (17ú heag.)Powers,Bruce P. Christian Leadership. Broadman: Broadman, 1979.
Lua MLA (9ú heag.)Powers,Bruce P. Christian Leadership. Broadman, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.