Lessing, D. M. (1981). Briefing for a descent into hell. Vintage Books.
Lua i Stíl Chicago (17ú heag.)Lessing, Doris May. Briefing for a Descent into Hell. New York: Vintage Books, 1981.
Lua MLA (9ú heag.)Lessing, Doris May. Briefing for a Descent into Hell. Vintage Books, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.