Sanecka E. Procrastination in Blended Learning The Role of General Self-efficacy, and Active and Passive Procrastination. IJREL [Internet]. 1. únor 2019 [citován 7. duben 2025];5(2):49-65. Dostupné z: https://journals.us.edu.pl/index.php/IJREL/article/view/8430