Spikins, P. (2022). Hidden Depths: The Origins of Human Connection. White Rose University Press.
Čikaški stil citiranja (17. izdanje)Spikins, Penny. Hidden Depths: The Origins of Human Connection. White Rose University Press, 2022.
MLA način citiranja (9. izdanje)Spikins, Penny. Hidden Depths: The Origins of Human Connection. White Rose University Press, 2022.
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