Statistics, D. o. D. a. S. (2019). Demographic Concepts and Characteristics. Obafemi Awolowo University.
Čikaški stil citiranja (17. izdanje)Statistics, Department of Demography and Social. Demographic Concepts and Characteristics. Obafemi Awolowo University, 2019.
MLA način citiranja (9. izdanje)Statistics, Department of Demography and Social. Demographic Concepts and Characteristics. Obafemi Awolowo University, 2019.
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