Problems with some Dry Foods on the Market Today
- Dr. Juliet Dacaestecker, Healthy Dog, Happy You: Secrets to a Thriving Life with Your Best Companion
- Michael S. Hand, Craig D. Thatcher, Rebecca L. Remillard, Phillip Roudebush, Lon D. Lewis, Small Animal Clinical Nutrition, 4th Edition (Mark Morris Institute; 2000)
- Susan Thrixton, The Pet Food Results, 2015. TheTruthAboutPetFood.com