DAULAT SINGH AND M.R. SINGH. Perception of differential credibility pattern of information sources. Indian Journal of Extension Education, India, v. 8, n. 3-4, p. 74–78, 1972. DOI: 10.48165/. Disponível em: http://epubs.icar.org.in/index.php/IJEE/article/view/160347. Acesso em: 21 oct. 2025.