The origin of species by means of natural selection;
or, The preservation of favored races in the struggle for life /
by charles Darwin ...

APA Citation

Darwin, C. (1872). The origin of species by means of natural selection: or, The preservation of favored races in the struggle for life. New York: Merrill and Baker.

MLA Citation

Darwin, Charles, 1809-1882. The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races In the Struggle for Life. New York: Merrill and Baker, 1872.

Warning: These citations may not always be complete (especially for serials).