Ludlum, R. (1975). The road to Gandolfo. Bantam Books.
Lua i Stíl Chicago (17ú heag.)Ludlum, Robert. The Road to Gandolfo. Toronto: Bantam Books, 1975.
Lua MLA (9ú heag.)Ludlum, Robert. The Road to Gandolfo. Bantam Books, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.