"Professional Software Development: Shorter Schedules, Higher Quality Products, More Successful Projects, Enhanced Careers", Microsoft Prese s Books, ISBN 978-0-321-19367-4* Dean Leffingwell (2007).
"Professional Software Development: Shorter Schedules, Higher Quality Products, More Successful Projects, Enhanced Careers", Addison-Wesley, ISBN 978-0-321-19367-4* Dean Leffingwell (2007).