Sagan, F. (1978). The Unmade bed. W.H.Allen.
Cita Chicago (17th ed.)Sagan, Francoise. The Unmade Bed. London: W.H.Allen, 1978.
Cita MLA (9th ed.)Sagan, Francoise. The Unmade Bed. W.H.Allen, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.