Trojak, M., Kiełbasa, B., Popa, D. i Sargo, A. 2019. New Approaches to Developing the Integral Indicator Methodology for Estimating the Financial Efficiency of Agricultural Entities in Poland, the Republic of Moldova, and EU Countries. Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego. 19, 4 (grudz. 2019), 103–112. DOI:https://doi.org/10.22630/PRS.2019.19.4.60.