Jeffers, A. (1998). Safe as houses: Alex Jeffers (5. Auflage.). GMP.
Lua i Stíl Chicago (17ú heag.)Jeffers, Alex. Safe as Houses: Alex Jeffers. 5. Auflage. Swaffham: GMP, 1998.
Lua MLA (8ú heag.)Jeffers, Alex. Safe as Houses: Alex Jeffers. 5. Auflage. GMP, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.