APA (7th ed.) Citation

Darwin, C., Barrett, P. H., & Freeman, R. B. (1988). Monographs of the fossil Lepadidae and the fossil Balanidae. Pickering.

Chicago Style (17th ed.) Citation

Darwin, Charles, Paul H. Barrett, and R. B. Freeman. Monographs of the Fossil Lepadidae and the Fossil Balanidae. London: Pickering, 1988.

MLA (8th ed.) Citation

Darwin, Charles, et al. Monographs of the Fossil Lepadidae and the Fossil Balanidae. Pickering, 1988.