Pudjiati, E. S., and S. Suparjo. “Creating Competitive Advantages through Organizational Learning Based on Knowledge Sharing Culture and Altruist Spirit in Private Universities”. International Journal of Management Excellence (ISSN: 2292-1648), vol. 5, no. 2, June 2015, pp. 591-8, doi:10.17722/ijme.v5i2.803.