APA (7th ed.) Citation

Darwin, C. (1851). A monograph on the sub-class Cirripedia, with figures of all the species. Johnson Reprint.

Chicago Style (17th ed.) Citation

Darwin, Charles. A Monograph on the Sub-class Cirripedia, with Figures of All the Species. New York: Johnson Reprint, 1851.

MLA (9th ed.) Citation

Darwin, Charles. A Monograph on the Sub-class Cirripedia, with Figures of All the Species. Johnson Reprint, 1851.