N.S. Awunor, D.T. Obong, R.I. Jalo, L. Lar, A. Oyefabi, C. Okeke, O. Audu, A. Soter, A.R. Isara, O. Akinyemi, and C. Abejegah. “Knowledge, Perception, and Uptake of Mandatory COVID-19 Vaccination Among Nigerian Civil Servants: Implications for Evidence-Based Policies”. Journal of Community Medicine & Primary Health Care, vol. 35, no. 2, Aug. 2023, pp. 89-102, doi:10.4314/jcmphc.v35i2.9.