APA (7th ed.) Citation

Darwin, C. (1904). The various contrivances by which orchids are fertilised by insects (7th impression (2d ed.).). J. Murray.

Chicago Style (17th ed.) Citation

Darwin, Charles. The Various Contrivances by Which Orchids Are Fertilised by Insects. 7th impression (2d ed.). London: J. Murray, 1904.

MLA (9th ed.) Citation

Darwin, Charles. The Various Contrivances by Which Orchids Are Fertilised by Insects. 7th impression (2d ed.). J. Murray, 1904.