Perry, A. (1998). The silent cry = Stilles Echo <engl.>: Anne Perry. Ivy Books.
Cita Chicago (17th ed.)Perry, Anne. The Silent Cry = Stilles Echo <engl.>: Anne Perry. New York: Ivy Books, 1998.
Cita MLA (8th ed.)Perry, Anne. The Silent Cry = Stilles Echo <engl.>: Anne Perry. Ivy Books, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.