Modignani, S. C. (2011). Mister Gregory. Porto Editora.
Lua i Stíl Chicago (17ú heag.)Modignani, Sveva Casati. Mister Gregory. Porto Editora, 2011.
Lua MLA (8ú heag.)Modignani, Sveva Casati. Mister Gregory. Porto Editora, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.