Wooldridge, Jeffrey M.(2013), Introductory Econometrics: A Modern Approach, 5th ed., South-Western, Cengage Learning
Walsh, Bob(2009), The Web Startup Success Guide, Apress
Spencer, L.,& Spencer, S. (1993) Competency at Work : Models for Superior Performance, John Wiley & Sons, Inc
Sparrow, P. (1996), “Competency Based Pay : Too Good to be True”, People Management, 2(24), 22-27.
Saunders, Mark, Philip Lewis, and Adrian Thornhill(2009), Research Methods for Business Students, 5th ed., Pearson Education Limited
Ronstadt, R.(1987). The Educated Entrepreneurship: A New Era of Entrepreneurial Education is Beginning. American Journal of Samall Business, 11(4), 37-53
Ries, Eric(2011), The Lean Startup, Crown Business
Pinson, Linda and Jedrry Jinnett(2006), Steps to Small Business Start-up, 6th ed., Kaplan Publishing
Mooi, Erik and Marko Sarstedt(2011), A Concise Guide to Market Research : The Process, Data, and Methods Using IBM SPSS Statistics, Springer-Verlag Berlin
Hill, R. Carter, William E. Griffiths, and Guay C. Lim(2011), Principles of Econometrics, 4th ed., John Wiley & Sons, Inc.
Hair, Joseph F., Jr., William C. Black, Barry J. Babin, and Rolph E. Anderson(2010), Multivariate Data Analysis, 7th ed., Pearson Education, Inc.
Hair, Joseph F., Jr., Mary Wolfinbarger Celsi, David J. Ortinau, and Robert P. Bush(2013), Essentials of Marketing Research, 3rd ed., McGraw-Hill Co., Inc.
Hair, J.F., Jr., W.C. Babin, R.E. Anderson, and R.L. Tatham(2006), Multivariate Data Analysis, 6th ed., Pearson Education, Inc.
Gujarati, Damodar N. and Dawn C. Porter(2010), Essentials of econometrics, 4th ed., McGraw-Hill/Irwin