ARMENDÁRIZ, Enrique. Pioneer public relations in Spain. Some precedents in the first half of the twentieth century and preliminary steps of the new profession. Anàlisi, [S. l.], n. 45, p. 15–31, 2012. DOI: 10.7238/a.v0i45.1581. Disponível em: https://analisi.cat/article/view/n45-armendariz. Acesso em: 16 apr. 2025.