Copland, A., & Perlis, V. (1990). Copland: Since 1943 / by Aaron Copland and Vivian Perlis. St. Martin's Press.
Lua i Stíl Chicago (17ú heag.)Copland, Aaron, agus Vivian Perlis. Copland: Since 1943 / by Aaron Copland and Vivian Perlis. New York: St. Martin's Press, 1990.
Lua MLA (8ú heag.)Copland, Aaron, agus Vivian Perlis. Copland: Since 1943 / by Aaron Copland and Vivian Perlis. St. Martin's Press, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.