APA

Darwin C., . (1902). The origin of species by means of natural selection, ou, The preservation of favoured races in the struggle for life. London: John Murray.

Chicago

Darwin Charles, . 1902. The origin of species by means of natural selection, ou, The preservation of favoured races in the struggle for life. London: John Murray.

Harvard

Darwin C., . (1902). The origin of species by means of natural selection, ou, The preservation of favoured races in the struggle for life. London: John Murray.

MLA

Darwin Charles, . The origin of species by means of natural selection, ou, The preservation of favoured races in the struggle for life. London: John Murray. 1902.