S.P. BOSE. Socio-Cultural Factors in the Farm Efficiency. Indian Journal of Extension Education, India, v. 1, n. 3, p. 192–199, 1965. DOI: 10.48165/. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/159617. Acesso em: 21 oct. 2025.