APA (7th ed.) Citation

Edwards, C. A., & Lofty, J. R. (1977). Biology of earthworms (2. ed.). Chapman and Hall.

Chicago Style (17th ed.) Citation

Edwards, Clive A., and J. R. Lofty. Biology of Earthworms. 2. ed. London: Chapman and Hall, 1977.

MLA (9th ed.) Citation

Edwards, Clive A., and J. R. Lofty. Biology of Earthworms. 2. ed. Chapman and Hall, 1977.