1. Ackoff, R.L.: Redesigning the Future: A Systems Approach to Societal Problems. Wiley, Hoboken (1974)
2. Adderley, K., Ashwin, C., Bradbury, P., Freeman, J., Goodlad, S., Greene, J., Jenkins, D., Rae, J., Uren, O.: Project Methods in Higher Education, vol. 24. Society for Research into Higher Education, London (1975)
3. Ayas, K., Zeniuk, N.: Project-based learning: building communities of reflective practitioners. Manag. Learn. 32(1), 61–76 (2001)
4. Blumenfeld, P.C., Soloway, E., Marx, R.W., Krajcik, J.S., Guzdial, M., Palincsar, A.: Motivating project-based learning: sustaining the doing, supporting the learning. Educ. Psychol. 26(3/4), 369–398 (1991)
5. Boss, S., Krauss, J.: Reinventing Project-based Learning: Your Field Guide to Real-World Projects in the Digital Age. International Society for Technology in Education, Washington (2007)