Sowell, T. (1987). A conflict of visions (First Quill edition.). Quill.
Lua i Stíl Chicago (17ú heag.)Sowell, Thomas. A Conflict of Visions. First Quill edition. New York: Quill, 1987.
Lua MLA (8ú heag.)Sowell, Thomas. A Conflict of Visions. First Quill edition. Quill, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.