Statistics, D. o. D. a. S. (2019). Sources and Nature of Social and Economic Statistic II. Obafemi Awolowo University.
Čikaški stil citiranja (17. izdanje)Statistics, Department of Demography and Social. Sources and Nature of Social and Economic Statistic II. Obafemi Awolowo University, 2019.
MLA način citiranja (9. izdanje)Statistics, Department of Demography and Social. Sources and Nature of Social and Economic Statistic II. Obafemi Awolowo University, 2019.
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