Brazevich С. С. Karl Marx’s empirical social research. Monitoring of Public Opinion: Economic and Social Changes, [S. l.], n. 2, 2019. DOI: 10.14515/monitoring.2019.2.21. Disponível em: https://monitoringjournal.ru/index.php/monitoring/article/view/173. Acesso em: 22 jul. 2024.