APA (7th ed.) Citation

Hayward, P. J., & Ryland, J. S. (1999). Cheilostomatous bryozoa: Notes for the identification of British species (2. ed.). The Linnean Society [u.a.].

Chicago Style (17th ed.) Citation

Hayward, Peter J., and J. S. Ryland. Cheilostomatous Bryozoa: Notes for the Identification of British Species. 2. ed. London [u.a.]: The Linnean Society [u.a.], 1999.

MLA (9th ed.) Citation

Hayward, Peter J., and J. S. Ryland. Cheilostomatous Bryozoa: Notes for the Identification of British Species. 2. ed. The Linnean Society [u.a.], 1999.