APA (7th ed.) Citation

Sims, R. W., & Gerard, B. M. (1985). Earthworms: Keys and notes for the identification and study of the species. Brill/Backhuys.

Chicago Style (17th ed.) Citation

Sims, Reginald W., and Brian M. Gerard. Earthworms: Keys and Notes for the Identification and Study of the Species. London u.a: Brill/Backhuys, 1985.

MLA (9th ed.) Citation

Sims, Reginald W., and Brian M. Gerard. Earthworms: Keys and Notes for the Identification and Study of the Species. Brill/Backhuys, 1985.