Webster, D. (1965). Unchanging mission: Biblical and contemporary. Fortress Press.
Lua i Stíl Chicago (17ú heag.)Webster, Douglas. Unchanging Mission: Biblical and Contemporary. Philadelphia: Fortress Press, 1965.
Lua MLA (8ú heag.)Webster, Douglas. Unchanging Mission: Biblical and Contemporary. Fortress Press, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.