Yacelga Rosero, Cecilia, and Hada Solórzano Robinson. “Sustainability in the Curriculum of the Tourism Professional at the Polytechnic State University of Carchi UPEC”. Tierra Infinita 5, no. 1 (December 20, 2019): 189–200. Accessed February 8, 2026. https://revistasdigitalesupeceduec35.biteca.online/index.php/tierrainfinita/article/view/969.