NORRIS, M. (1993). Healthy Software Project A Guide To Succesful Development And Management Mark Norris, Peter Rigby And Malcolm Payne. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)NORRIS, Mark. Healthy Software Project A Guide To Succesful Development And Management Mark Norris, Peter Rigby And Malcolm Payne. John Wiley & Sons, 1993.
Lua MLA (8ú heag.)NORRIS, Mark. Healthy Software Project A Guide To Succesful Development And Management Mark Norris, Peter Rigby And Malcolm Payne. John Wiley & Sons, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.