1. OECD. Measuring the non-observed economy: A handbook, OECD, IMF, ILO, Interstate Statistical Committee of the Commonwealth of Independent States, 2002.
2. PARIS21. Proposing a framework for statistical capacity development 4.0, PARIS21, Paris. 2017.
3. Africa statistical tragedy;Devarajan;Review of Income and Wealth,2013
4. UNECE. How are national statistical offices contributing to managing the COVID-19 disaster? Virtual Discussion. June 10, 2020. Accessed at: https://unece.org/statistics/events/how-are-national-statistical-offices-contributing-managing-covid-19-disaster.
5. UNDESA. Monitoring the state of statistical operations under the COVID-19 pandemic. UN Department of Economic and Social Affairs, World Bank. December 2020. Accessed at: https://unstats.un.org/unsd/covid19-response/covid19-nso-survey-report-3.pdf. 2020.