Manurung, Nurdiana, and Arva Rochmawati. “Relationship Of Knowledge And Attitude Of Pregnant Mothers With Pregnancy Examination (Anc K4) In Environment Iii Kelurahan Baru Ladang Bambu, Tuntunan District”. Science Midwifery 9, no. 1, Oktober (October 31, 2020): 235–241. Accessed April 17, 2026. https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/335.