RANŽELOVIĆ, Dušan; KOSTIĆ, Senka. Contributions of prof. dr Petar Kostic for the Development and Improvement of Psychological Measuring Instruments in the Republic of Serbia. Collection of Papers of the Faculty of Philosophy in Priština, [S. l.], v. 50, n. 1, p. 229–252, 2020. DOI: 10.5937/zrffp50-25197. Dostupno na: https://test.aseestant.ceon.rs/index.php/zrffp/article/view/25197. Pristupljeno: 20 sep. 2026.