Sagan, Adam, and Eugeniusz Kąciak. 2015. “Analysis of Means-End Structures Emerging from Abbreviated Hard Laddering Interviews”. Krakow Review of Economics and Management Zeszyty Naukowe Uniwersytetu Ekonomicznego W Krakowie, no. 904 (December): 5-18. https://doi.org/10.15678/krem.819.