1. Sischer H, DuBrul EL:Oral anatomy. 6th ed. St. Louis: CV Mosby 1975:134–135, 171.
2. Kaplan AS, Assael LA:Temporomandibular disorders: diagnosis and treatment. Philadelphia: WB Saunders Co. 1991:5.
3. Travell JG, Simon DG:Myofascial pain and dysfunction: the trigger point manual. Baltimore: Williams & Wilkins 1983:220–225.
4. Bell WE:Temporomandibular disorders. 2nd ed. Yearbook Medical Pub: Chicago 1986:21.
5. Simons DG, Travell JG, Simons LS:Myofascial pain and dysfunction: the trigger point manual. Vol. 1. Philadelphia: Williams & Wilkins 1999:332.