1. Aspridis, G. (2004). Human resource performance evaluation systems. Comparison in public and private sectors (Doctoral Dissertation, Faculty of Political Science and Public Administration of National and Kapodistrian, University of Athens).
2. Aspridis, G. (2007). Performance management in modern human resource management: How public sector can learn from private sector. Mytilene: University of Aegean.
3. Aspridis, G., & Kyriakou, D. (2012). Human resource evaluation in hotel units. Management, 7(1), 17–34.
4. Avlonitis, G., & Giannopoulos, A. (2008). Tourism Marketing and Competitiveness, Scientific Marketing (May), Ed. Morax.
5. Balthazard, P. A., Cooke, R. A., & Potter, R. E. (2006). Dysfunctional culture, dysfunctional organization: Capturing the behavioral norms that form organizational culture and drive performance. Journal of Managerial Psychology, 21(8), 709–732.