Amberg, G. (1954). Ballet in America: The emergence of an american art- (4a.ed.). A Mentor Book.
Lua i Stíl Chicago (17ú heag.)Amberg, George. Ballet in America: The Emergence of an American Art-. 4a.ed. New York: A Mentor Book, 1954.
Lua MLA (9ú heag.)Amberg, George. Ballet in America: The Emergence of an American Art-. 4a.ed. A Mentor Book, 1954.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.