„Maternal, newborn and child health (MNCH) services utilization: A comparative case study of tertiary and primary health care facilities in Cross River State”., AJBR, t. 24, nr 1, s. 81–92, sty. 2021, Dostęp: 6 kwiecień 2026. [Online]. Dostępne na: https://www.ojshostng.com/index.php/ajbr/article/view/1154