Porter, D. (2006). Frommer's Italy 2007. Wiley.
Lua i Stíl Chicago (17ú heag.)Porter, Darwin. Frommer's Italy 2007. Hoboken, N.J: Wiley, 2006.
Lua MLA (9ú heag.)Porter, Darwin. Frommer's Italy 2007. Wiley, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.