Darwin, C., & Hutchins, R. M. The origin of species by means of natural selection: the descent of man and selection in relation to sex: Charles Darwin.
Chicago-referens (17:e uppl.)Darwin, Charles., och Robert Maynar Hutchins. The Origin of Species by Means of Natural Selection: The Descent of Man and Selection in Relation to Sex: Charles Darwin.
MLA-referens (8:e uppl.)Darwin, Charles., och Robert Maynar Hutchins. The Origin of Species by Means of Natural Selection: The Descent of Man and Selection in Relation to Sex: Charles Darwin.
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