POSTAJIAN, C. Short-term and long-term impacts of Covid-19 on the advertising industry. Yearbook of the Department of Cinema, Advertising and Show Business, [S. l.], p. 138–150, 2021. DOI: 10.33919/ydcas.21.12. Disponível em: https://ojs.nbu.bg/index.php/YDCASH/article/view/1220. Acesso em: 7 dec. 2025.