SUNDARI, D. S. .; SISWANTO; PRIMASTUTI, E. . Application of Progressive Muscle Relaxation and Deep Breathing in Working Pregnant Women to Reduce Stress Levels During the Covid-19 Pandemic. Nusantara Science and Technology Proceedings, Malang, Indonesia, p. 120-124, 2023. DOI: 10.11594/nstp.2023.3516. Disponível em: https://nstproceeding.com/index.php/nuscientech/article/view/1034. Acesso em: 5 feb. 2025.