Kumar, Gulshan. “Machinery & Parts Industry of Punjab - An Empirical Analysis of Growth and Productivity”. Prabandhan: Indian Journal of Management 4, no. 7 (July 1, 2011): 44–52. Accessed October 22, 2025. https://www.indianjournalofeconomicsandresearch.com/index.php/pijom/article/view/62584.