The Problem of Man's Ancestry.

MLA

Giuffrida-Ruggeri, V. “The Problem of Man’s Ancestry.” Nature, vol. 101, no. 2544, Aug. 1918, p. 424. EBSCOhost, https://doi.org/10.1038/101424a0.

APA

Giuffrida-Ruggeri, V. (1918). The Problem of Man’s Ancestry. Nature, 101(2544), 424. https://doi.org/10.1038/101424a0

Chicago

Giuffrida-Ruggeri, V. 1918. “The Problem of Man’s Ancestry.” Nature 101 (2544): 424. doi:10.1038/101424a0.