P.N. MATHUR. Prestige leaders and family friends as communicators. Indian Journal of Extension Education, India, v. 3, n. 1&2, p. 55–60, 1967. DOI: 10.48165/. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/159922. Acesso em: 15 jul. 2026.