Zzaqia, H. et al. 2023. The Effect of 3 Months Kb Injection with Changes in Menstrual Cycle at Pmb Hanifatuz Zakiyah Kandang Tepus Senduro Lumajang Undergraduate Midwifery Study Program Stikes Hafshawaty Zainul Hasan Genggong Probolinggo. JURNAL ILMIAH OBSGIN : Jurnal Ilmiah Ilmu Kebidanan & Kandungan P-ISSN : 1979-3340 e-ISSN : 2685-7987. 15, 2 (May 2023), 84–93. DOI:https://doi.org/10.36089/job.v15i2.1139.