[1] Cleveland Clinic. Mouth Ulcer. Retrieved on the 25th of May, 2025.
[2] Jenna Fletcher. Everything You Need to Know about Mouth Ulcers. Retrieved on the 25th of May, 2025.
[3] Julie Roddick and Heather Hobbs. Mouth Sores: Symptoms, Treatment, and Prevention. Retrieved on the 25th of May, 2025.