Cita APA

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.

Citación estilo Chicago

Darwin, Charles Robert 1809-1882, y 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.

Cita MLA

Darwin, Charles Robert 1809-1882, y 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.