Nygaard, R., & Doud, G. R. (1994). Tragedy to triumph. David C.Cook.
Lua i Stíl Chicago (17ú heag.)Nygaard, Reuel, agus Guy R. Doud. Tragedy to Triumph. Illinois: David C.Cook, 1994.
Lua MLA (9ú heag.)Nygaard, Reuel, agus Guy R. Doud. Tragedy to Triumph. David C.Cook, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.