1. Aga, D. A., Noorderhaven, N., & Vallejo, B. (2016). Transformational leadership and project success: The mediating role of team-building. International Journal of Project Management, 34(5), 806-818. https://doi.org/10.1016/j.ijproman.2016.02.012
2. Agyemang, C. B., & Ofei, S. B. (2013). Employee work engagement and organizational commitment: A comparative study of private and public sector organizations in Ghana. European Journal of Business and Innovation Research, 1(4), 20-33. Retrieved from: https://bit.ly/2ZpXJXG
3. Alexander, R., & Poyyamoli, G. (2014). The effectiveness of environmental education for sustainable development based on active teaching and learning at high school level - a case study from Puducherry and Cuddalore regions, India. Journal of Sustainability Education, 7. Retrieved from https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.662.6909&rep=rep1&type=pdf
4. Askeland, H., Espedal, G., Lovaas, B. J., & Sirris, S. (2020). Understanding work values work. Switzerland: Palgrave Macmillan.
5. Bachman, B. (2017). Ethical leadership in organizations. Switzerland: Springer International Publishing.