APA (7th ed.) Citation

Elmer, G., McFarland, L. V., & McFarland, M. (2007). The power of probiotics: Improving your health with beneficial microbes. Routledge.

Chicago Style (17th ed.) Citation

Elmer, Gary, Lynne V. McFarland, and Marc McFarland. The Power of Probiotics: Improving Your Health with Beneficial Microbes. New York: Routledge, 2007.

MLA (8th ed.) Citation

Elmer, Gary, et al. The Power of Probiotics: Improving Your Health with Beneficial Microbes. Routledge, 2007.