Metzger, Michael, Maureen E. Metzger, and John Ickis. “Social Marketing As a New Tool of Corporate Social Responsibility: The Case of Literacy in Costa Rica ”. Multidisciplinary Business Review 3, no. 1 (June 1, 2010): 50–63. Accessed April 25, 2026. https://journalmbr.net/index.php/mbr/article/view/386.