Stupak Oksana Yuryevna. Theory and Practice of Developing Youth Social Activity at Civil Society Institutions : Доктор педагогічних наук : spec.. 13.00.05 - Соціальна педагогіка : presented. 2021-02-25; popup.evolution: .; The State Higher Educational Institution "Donbas State Pedagogical University". – Слов'янськ, 0521U100228.

Updated: 2026-11-05