de la Roche , C. ., T. . de Barros, T. Chuchu, B. . Nyagadza, and M. . Venter de Villiers. “An Investigation on Consumer Perceptions of Email and Social Media Marketing: An Advertising Case in South Africa”. International Review of Management and Marketing, vol. 12, no. 4, July 2022, pp. 29-37, doi:10.32479/irmm.13248.