«An Exploratory Study of Menstruation and Menstrual Hygiene Knowledge Among Adolescents in Urban and Rural Secondary Schools in Cross River State, Nigeria», AJBR, т. 23, вып. 3, сс. 321–326, сен. 2020, просмотрено: 26 апрель 2026 г. [онлайн]. доступно на: https://ojshostng.com/index.php/ajbr/article/view/494