Zapata Caraguay LE, Ocaña Rogel ML, Feijoo Jaramillo IM, Guerrero Carrasco MJ, Sarmiento Chugcho CB. The quality of customer service in the retention and loyalty of service companies. Revista UG [Internet]. 2025 Jul. 8 [cited 2026 Apr. 17];139(2):1-20. Available from: https://revistas.ug.edu.ec/index.php/rug/article/view/2066