Graham, B. (1981). The Billy Graham Christian worker's handbook. World Wide Publications.
Lua i Stíl Chicago (17ú heag.)Graham, Billy. The Billy Graham Christian Worker's Handbook. Minneapolis, Minn.: World Wide Publications, 1981.
Lua MLA (9ú heag.)Graham, Billy. The Billy Graham Christian Worker's Handbook. World Wide Publications, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.