1. Aaker, D., Kumar, V., & Day, G. (1995). Marketing research (5th ed.). New York, U.S.: John Wiley & Sons.
2. Rewarding in open innovation communities – how to motivate members
3. Cha, Y., Lee, H., & Shin, M. (2013). What effect do student advertising contests have on getting jobs in the advertising industry: The comparison of perceptions between students and Ad practitioner. The Korean Journal of Advertising, 24(5), 99-116.
4. Hazleen, A. (2014). Influencing factors in mobile crowdsourcing participation: A review of empirical studies. The 3rd International Conference on Computer Science and Computational Mathematics (ICCSCM 2014), 138-145.
5. Effects of Contest Factors on Attitude and Participation Intention