Rasaki, A., I. O. Rasheed, M. Amina, G. A. Adamu, H. K. Shina, and I. M. Rasheedah. “Mothers’ Preference for Routine Immunization Appointment Reminders in Gombe, Gombe State, Nigeria”. International Journal of Contemporary Pediatrics, vol. 9, no. 3, Feb. 2022, pp. 224-9, doi:10.18203/2349-3291.ijcp20220447.