Cerf, b. (1972). The sound of laughter. Bantam.
Lua i Stíl Chicago (17ú heag.)Cerf, bennett. The Sound of Laughter. New york: Bantam, 1972.
Lua MLA (9ú heag.)Cerf, bennett. The Sound of Laughter. Bantam, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.