Instituto Nacional de Estadística (INE), Unidad Técnica censal (UTC); Minnesota Population Center (University of Minnesota), 'XIII Censo General de Población y Vivienda 2001 - IPUMS Subset (Venezuela, RB)', 2016
Development Research Group, Finance and Private Sector Development Unit (World Bank), 'Global Financial Inclusion (Global Findex) Database 2014 (Ecuador)', 2015
David McKenzie (World Bank); Johan Mistiaen (World Bank), 'Surveying Japanese-Brazilian Households: Comparison of Census-Based, Snowball and Intercept Point Surveys 2006 (Brazil)', 2015
Facebook; The Organisation for Economic Co-operation and Development (OECD); World Bank, 'Future of Business Survey 2020 (Albania, Algeria, American Samoa...and 176 more)', 2021