Ives, C., & Torrens, C. Essays before a sonata: Charles Ives. Manifestes et témoignages.(1973).
Lua i Stíl Chicago (17ú heag.)Ives, Charles, agus Charles Torrens. "Essays Before a Sonata: Charles Ives." Manifestes Et Témoignages.(1973) .
Lua MLA (8ú heag.)Ives, Charles, agus Charles Torrens. "Essays Before a Sonata: Charles Ives." Manifestes Et Témoignages.(1973), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.