Walters, M. (1997). The echo = Das Echo <engl.>: Minette Walters. Pan Books.
Cita Chicago (17th ed.)Walters, Minette. The Echo = Das Echo <engl.>: Minette Walters. London: Pan Books, 1997.
Cita MLA (8th ed.)Walters, Minette. The Echo = Das Echo <engl.>: Minette Walters. Pan Books, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.