@ARTICLE{
author={Stojanovic Biljana J,Ristanovic Dusan P,Zivkovic Predrag,Dzaferovic Mirsada M},
year={2023},
title={Project-Based Learning in Early Childhood Education in Serbia: First Experiences of Preschool Teachers},
journal={INTERNATIONAL JOURNAL OF COGNITIVE RESEARCH IN SCIENCE ENGINEERING AND EDUCATION-IJCRSEE},
volume={11},
number={2},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Stojadinovic Milos N,Ristanovic Dusan P,Komnenovic Milan S},
year={2021},
title={Effects of project-based learning on academic achievement: A meta-analysis},
journal={ZBORNIK INSTITUTA ZA PEDAGOSKA ISTRAZIVANJA},
volume={53},
number={2},
pages={-},
document_type={Article},
}