Osterwalder, A., & Pigneur, Y. (2010). Business model generation: a handbook for visionaries, game changers, and challengers (Vol. 1). John Wiley & Sons. Correia, Maria. (2019). Sustainability: An Overview of the Triple Bottom Line and Sustainability Implementation. International Journal of Strategic Engineering. 2. 29-38. 10.4018/IJoSE.2019010103.