APA-referens (7:e uppl.)

Ismail, A., Cooper, C., Felsenberg, D., Varlow, J., Kanis, J., Silman, A., & O'Neill, T. (1999). Number and type of vertebral deformities: Epidemiological characteristics and relation to back pain and height loss. European Vertebral Osteoporosis Study Group.

Chicago-referens (17:e uppl.)

Ismail, A., C. Cooper, D. Felsenberg, J. Varlow, J. Kanis, A. Silman, och T. O'Neill. Number and Type of Vertebral Deformities: Epidemiological Characteristics and Relation to Back Pain and Height Loss. European Vertebral Osteoporosis Study Group. 1999.

MLA-referens (9:e uppl.)

Ismail, A., et al. Number and Type of Vertebral Deformities: Epidemiological Characteristics and Relation to Back Pain and Height Loss. European Vertebral Osteoporosis Study Group. 1999.