APA (7th ed.) Citation

Colbert, D., & Mast, A. (2021). Dr. Colbert's healthy gut zone. Siloam.

Chicago Style (17th ed.) Citation

Colbert, Don, and Abraham Mast. Dr. Colbert's Healthy Gut Zone. Lake Mary, Florida: Siloam, 2021.

MLA (8th ed.) Citation

Colbert, Don, and Abraham Mast. Dr. Colbert's Healthy Gut Zone. Siloam, 2021.

Warning: These citations may not always be 100% accurate.