Bryman, Alan (2003): Social Research methods, 2nd edition. Oxford: Oxford University Press. Chapter 3-11, 13-16. (pp. 280).
Chalmers, A. F. (1999): What is this thing called science?, Buckingham: Open University Press. Chapter 1-2, 4-10, 14-16.
Cozby, Paul C. (2004): Methods in Behavioral Research, 8th edition. Boston: McGraw-Hill. Chapter 5-7, 12-13, Appendix B (pp. 121).
World Bank (2000): Higher Education in Developing Countries: Peril and Promise., Washington, D.C.: The World Bank. Statistical Appendix (pp. 37).
Total number of pages: 625