«Knowledge, adherence to non-pharmaceutical interventions, and impact of COVID-19 lockdown among traders in Ibadan, Nigeria: Knowledge and adherence to non-pharmaceutical interventions among traders in Ibadan» (2021) African Journal of Biomedical Research, 24(3), s. 443–450. Tilgjengelig på: https://ojshostng.com/index.php/ajbr/article/view/1718 (åpnet: 25 april 2026).