Arkadiusz StajszczakBożena Wujec2025-07-252025-07-2520112081-7029https://repozytorium.kozminski.edu.pl/handle/item/1896CC-BY-NC-ND-4.0training efficiencyROI in trainingcoaching valueefektywność szkoleńROI w szkoleniachwartość coachinguEfficiency measurement of human development projects in companies. The financial perspectiveEfficiency measurement of human development projects in companies. The financial perspectiveArticle