Dewi, R. “Hemoglobin Levels of Pregnancy Women Against The Weight Of A Born In The Abi Ummi DW Sarmadi Clinic Palembang 2020”. Journal of Midwifery and Nursing, vol. 2, no. 3, Aug. 2020, pp. 295-9, https://iocscience.org/ejournal/index.php/JMN/article/view/884.