Nainggolan, D. R. .; Ujung, R. M. .; Ritonga, P. T. Influence of Hypnobirthing on Anxiety Levels Pregnant Women in The Siatas Barita Health Center Work Area In 2020. EMB 2021, 13 (2), 156-163. https://doi.org/10.36456/embrio.v13i2.3513.