“Software Development Using Productivity Metrics and Different Cost Estimation Technique”. iJournals:International Journal of Software & Hardware Research in Engineering ISSN:2347-4890 9, no. 5 (जून 1, 2021). अंतिम उपयोग अक्टूबर 21, 2026. https://ijournals.in/journal/index.php/ijshre/article/view/13.