[1]
D. Ranželović and S. Kostić, “Contributions of prof. dr Petar Kostic for the Development and Improvement of Psychological Measuring Instruments in the Republic of Serbia”, Zb rad Filoz fak Priština, vol. 50, no. 1, pp. 229–252, Jun. 2020, doi: 10.5937/zrffp50-25197.