Arifin, B.; Saputra, S. Y.; Muzakki, A.; Setiawan, E.; Jumareng, H. Increase Students’ Self-Confidence and Reduce Anxiety During Covid-19: Is Coping Strategy Becomes the Solution?. J. Obs. J. Pendidik. Anak Usia Dini 2022, 6, 4171-4180.