Ashaye, T. (2019). Soils civilisations and the march of time. University of Ife Press.
Čikaški stil citiranja (17. izdanje)Ashaye, T.I. Soils Civilisations and the March of Time. University of Ife Press, 2019.
MLA način citiranja (9. izdanje)Ashaye, T.I. Soils Civilisations and the March of Time. University of Ife Press, 2019.
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