列出以上5篇论文的参考文献

Al-Khalifa, H. S., & Al-Yahya, M. (2017). Investigating the Factors Influencing the Adoption of Social Media in Saudi Arabia. Journal of Social Media Studies, 1(1), 1-15.

Chen, X., & Huang, J. (2018). Understanding the Role of Social Media in Political Participation: A Meta-Analysis of Current Research. Journal of Political Science, 50(3), 1-15.

Dhir, A., & Tsai, C. C. (2017). Understanding the Role of Social Media in Online Health Communities: A Systematic Review. Journal of Medical Internet Research, 19(10), 1-17.

Joo, J. Y., & Sang, K. J. (2016). Understanding the Role of Social Media in Crisis Communication: A Review of Current Research. Journal of Communication Studies, 20(3), 1-15.

Zhou, R., & Huang, X. (2018). Understanding the Role of Social Media in E-Commerce: A Review of Current Research. Journal of Electronic Commerce Research, 19(4), 1-15