APA

Thorbjörnsson C. O., Alfredsson L., Fredriksson K., Köster M., Michélsen H., Vingård E., Torgén M. & Kilbom A. (19980611). Psychosocial and physical risk factors associated with low back pain: a 24 year follow up among women and men in a broad range of occupations. : Occupational and environmental medicine.

Chicago

Thorbjörnsson C O, Alfredsson L, Fredriksson K, Köster M, Michélsen H, Vingård E, Torgén M and Kilbom A. 19980611. Psychosocial and physical risk factors associated with low back pain: a 24 year follow up among women and men in a broad range of occupations. : Occupational and environmental medicine.

Harvard

Thorbjörnsson C. O., Alfredsson L., Fredriksson K., Köster M., Michélsen H., Vingård E., Torgén M. and Kilbom A. (19980611). Psychosocial and physical risk factors associated with low back pain: a 24 year follow up among women and men in a broad range of occupations. : Occupational and environmental medicine.

MLA

Thorbjörnsson C O, Alfredsson L, Fredriksson K, Köster M, Michélsen H, Vingård E, Torgén M and Kilbom A. Psychosocial and physical risk factors associated with low back pain: a 24 year follow up among women and men in a broad range of occupations. : Occupational and environmental medicine. 19980611.