APA (7th ed.) Citation

ScienceDirect (Online service), Hoar, W. S., & Randall, D. J. (1984). Gills. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), William Stewart Hoar, and David J. Randall. Gills. Orlando: Academic Press, 1984.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Gills. Academic Press, 1984.