APA (7th ed.) Citation

Chapman, V. J., & Chapman, D. J. (1973). The Algae (2nd ed.). Macmillan.

Chicago Style (17th ed.) Citation

Chapman, V. J., and D. J. Chapman. The Algae. 2nd ed. London: Macmillan, 1973.

MLA (9th ed.) Citation

Chapman, V. J., and D. J. Chapman. The Algae. 2nd ed. Macmillan, 1973.