Pietruszka-Ortyl, Anna. “Resource-Based Orientation in the Practice of Enterprises Management – Discussion of the Results of Empirical Research”. Krakow Review of Economics and Management Zeszyty Naukowe Uniwersytetu Ekonomicznego W Krakowie, no. 7(967), Feb. 2018, pp. 67-86, https://doi.org/10.15678/ZNUEK.2017.0967.0705.