Dutton, D. Image Assessment and Specification. SPIE Digital Library.
Lua i Stíl Chicago (17ú heag.)Dutton, David. Image Assessment and Specification. SPIE Digital Library.
Lua MLA (9ú heag.)Dutton, David. Image Assessment and Specification. SPIE Digital Library.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.