Murillo, Erick, Marcia Villavicencio, and Frida Bohórquez. “The Incorporation of Subjectivity in the Planning Process of Marketing”. Impacto Científico 13, no. 2 (December 6, 2018): 189-205. Accessed October 30, 2025. https://produccioncientifica.luz.edu.ve/index.php/impacto/article/view/41150.