Lessing, D. (1971). Briefing for a descent into hell. Flamingo.
Cita Chicago (17th ed.)Lessing, Doris. Briefing for a Descent into Hell. London: Flamingo, 1971.
Cita MLA (9th ed.)Lessing, Doris. Briefing for a Descent into Hell. Flamingo, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.