APA (7th ed.) Citation

Campbell, S. C., & Campbell, R. P. (2008). Wolfsnail: A backyard predator. Boyds Mill Press Inc..

Chicago Style (17th ed.) Citation

Campbell, Sarah C., and Richard P. Campbell. Wolfsnail: A Backyard Predator. Pennsylvania: Boyds Mill Press Inc., 2008.

MLA (9th ed.) Citation

Campbell, Sarah C., and Richard P. Campbell. Wolfsnail: A Backyard Predator. Boyds Mill Press Inc., 2008.