Sommerville, I. (2011). Software engineering (9th ed.). Pearson.
Lua i Stíl Chicago (17ú heag.)Sommerville, Ian. Software Engineering. 9th ed. Boston ; New Delhi: Pearson, 2011.
Lua MLA (8ú heag.)Sommerville, Ian. Software Engineering. 9th ed. Pearson, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.