A. D. Yermolaeva, L. A. Z. O. K. S. L. L. “Vendometric Analysis of Perception of Advertising by Consumers of Medicinal Drugs”. Opción, Vol. 34, Dec. 2019, pp. 278-92, http://www.produccioncientifica.luz.edu.ve/index.php/opcion/article/view/30260.