Rugg, H. O. (1963). Imagination. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Rugg, Harold Ordway. Imagination. New York: Harper & Row, 1963.
Lua MLA (9ú heag.)Rugg, Harold Ordway. Imagination. Harper & Row, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.