Willie, Michael Mncedisi. “Adoption of Digital Marketing Strategies by Medical Schemes in South Africa: A Case Study of Two Large Open Medical Schemes”. Advances in Business & Industrial Marketing Research 3, no. 1 (January 31, 2025): 57–67. Accessed August 27, 2025. http://advancesinresearch.id/index.php/ABIM/article/view/409.