Kartikaningrum, Yulia. 2026. “The Impact of Human Resource Planning and Development on The Productivity of SMEs in The Bulak District of Surabaya During The Covid-19 Pandemic”. Journal Research of Social Science, Economics, and Management 5 (10):12194-212. https://www.jrssem.publikasiindonesia.id.solusipublish.com/index.php/jrssem/article/view/1504.