Servan - Schreiber, J. -. J. (1980). The world challenge. Simon and schuster.
Lua i Stíl Chicago (17ú heag.)Servan - Schreiber, Jean - Jacque. The World Challenge. New York: Simon and schuster, 1980.
Lua MLA (9ú heag.)Servan - Schreiber, Jean - Jacque. The World Challenge. Simon and schuster, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.