Darwin, C. R. 1., & Darwin, C. R. 1. (1952). The origin of species by mens of natural selection ; The descent of man and selection in relation to sex. Chicago: Encyclopaedia Britannica.
Chicago Style CitationDarwin, Charles Robert 1809-1882, and Charles Robert 1809-1882 Darwin. The Origin of Species By Mens of Natural Selection ; The Descent of Man and Selection in Relation to Sex. Chicago: Encyclopaedia Britannica, 1952.
MLA CitationDarwin, Charles Robert 1809-1882, and Charles Robert 1809-1882 Darwin. The Origin of Species By Mens of Natural Selection ; The Descent of Man and Selection in Relation to Sex. Chicago: Encyclopaedia Britannica, 1952.
Warning: These citations may not always be 100% accurate.