Citação norma APA

Steen, K., Lems, W., Aertsen, J., Bezemer, D., & Dijkmans, B. (2001). Incidence of clinically manifest ulcers and their complications in patients with rheumatoid arthritis.

Citação norma Chicago

Steen, K., W. Lems, J. Aertsen, D. Bezemer, and B. Dijkmans. Incidence of Clinically Manifest Ulcers and Their Complications in Patients With Rheumatoid Arthritis. 2001.

Citação norma MLA

Steen, K., et al. Incidence of Clinically Manifest Ulcers and Their Complications in Patients With Rheumatoid Arthritis. 2001.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.