APA (7th ed.) Citation

Chapman, V. J., & Chapman, D. J. (1981). The algae (2nd ed., reprint.). Macmillan.

Chicago Style (17th ed.) Citation

Chapman, V. J., and David J. Chapman. The Algae. 2nd ed., reprint. London [etc.]: Macmillan, 1981.

MLA (9th ed.) Citation

Chapman, V. J., and David J. Chapman. The Algae. 2nd ed., reprint. Macmillan, 1981.