Lessing, D. (1969). The four- gated city. London: Macgibbon & Kee.
Chicago Style aipamenaLessing, Doris. The Four- Gated City. London: Macgibbon & Kee, 1969.
MLA aipamenaLessing, Doris. The Four- Gated City. London: Macgibbon & Kee, 1969.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.