Ragan, J. M., Z. B. Leahan, R. G. Malonoski, and C. J. Savino. “Starledger: A Business Activity Model Using SAP R/3 As A Classroom Tool To Measure Learning Outcomes”. American Journal of Business Education (AJBE), vol. 3, no. 2, Feb. 2010, pp. 43-56, doi:10.19030/ajbe.v3i2.384.