APA-referens

van Aken, J., van Dongen, H., le Cessie, S., Allaart, C. F., Breedveld, F. C., & Huizinga, T. W. J. (2006). Comparison of long term outcome of patients with rheumatoid arthritis presenting with undifferentiated arthritis or with rheumatoid arthritis: An observational cohort study. BMJ Group.

Chicago-stil citat

van Aken, J., H. van Dongen, S. le Cessie, C F. Allaart, F C. Breedveld, och T W J. Huizinga. Comparison of Long Term Outcome of Patients With Rheumatoid Arthritis Presenting With Undifferentiated Arthritis or With Rheumatoid Arthritis: An Observational Cohort Study. BMJ Group, 2006.

MLA-referens

van Aken, J., et al. Comparison of Long Term Outcome of Patients With Rheumatoid Arthritis Presenting With Undifferentiated Arthritis or With Rheumatoid Arthritis: An Observational Cohort Study. BMJ Group, 2006.

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