N. K., Ayu Sugiartini, and Ari Febriyanti N. M. “Relationship Between Perceptions and Class Participation of Pregnant Women”. International Journal of Research in Medical Sciences 8, no. 12 (November 27, 2020): 4219–4222. Accessed May 26, 2026. https://www.msjonline.org/index.php/ijrms/article/view/8882.