CaillietR. (1981). Low back syndrome. Philadelphia: F.A. Davis Company.
2.
FinnesonB. (1973). Low back pain. Philadelphia: J.B. Lippincott Company.
3.
FrymoyerJ.PopeM.ClementsJ.WilderD.MacPhersonB.AshikagaT. (1983, February). Risk factors in low-back pain. The Journal of Bone and Joint Surgery, 65-A(2), 213–218.
4.
KeimH.Kirkaldy-WillisW. (1980). Low back pain. Clinical Symposia, 32(6), 1–35.
5.
KelseyJ.WhiteA. (1980). Epidemiology and impact of low-back pain. Spine, 7(2), 141–149.
6.
NordbyE.J. (1981, January). Epidemiology and diagnosis in low back injury. Occupational Health and Safety, 50(1), 38–42.
7.
RugeD. (1977). Spondylosis. In RugeD.WiltseL. (Eds), Spinal disorders: Diagnosis and treatment (pp. 315–322). Philadelphia: Lea & Febiger.
8.
SheahanS. (1982, May). Assessment of low back pain. Nurse Practitioner, 7(5), 15–16+.