FU, Bingchen; LIU, Li. A Study on the Optimisation and Application of the 4P Marketing Strategy Theory in the Digital Economy Era. International Journal of Social Science and Education Research, [S. l.], v. 9, n. 5, p. 274–281, 2026. DOI: 10.6918/IJOSSER.202605_9(5).0030. Disponível em: https://ijosser.org/index.php/ojs/article/view/429. Acesso em: 13 may. 2026.