Carlshamre, P. (2001). A usability perspective on requirements engineering: From methodology to product development. Dept. of Computer and Information Science, Linköpings universitet.
Lua i Stíl Chicago (17ú heag.)Carlshamre, Pär. A Usability Perspective on Requirements Engineering: From Methodology to Product Development. Linköping: Dept. of Computer and Information Science, Linköpings universitet, 2001.
Lua MLA (8ú heag.)Carlshamre, Pär. A Usability Perspective on Requirements Engineering: From Methodology to Product Development. Dept. of Computer and Information Science, Linköpings universitet, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.