Perry, A. (1998). The silent cry = Stilles Echo <engl.>: Anne Perry. Ivy Books.
Lua i Stíl Chicago (17ú heag.)Perry, Anne. The Silent Cry = Stilles Echo <engl.>: Anne Perry. New York: Ivy Books, 1998.
Lua MLA (8ú heag.)Perry, Anne. The Silent Cry = Stilles Echo <engl.>: Anne Perry. Ivy Books, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.