Echakan, D. E., M. M. Oluoch, and M. B. Osuga. “FACTORS AFFECTING ACCESS TO IMMUNIZATION SERVICES IN THE INTEGRATED OUTREACH MODEL: A CASE STUDY OF LOIMA SUB COUNTY”. Journal of Health, Medicine and Nursing, vol. 3, no. 2, Aug. 2018, pp. 37-58, https://www.iprjb.org/journals/index.php/JHMN/article/view/678.