Thanh Nguyen, P., Q. L. H. Thuy To Nguyen, V. D. Bich Huynh, E. Laxmi Lydia, y K. Shankar. «From a Business Point of View Study the Importance of Event Management Services of Specific Company». Opción, Vol. 35, junio de 2019, pp. 2899-21, https://produccioncientificaluz.org/index.php/opcion/article/view/29865.