APA引文

Heliövaara, M., Aho, K., Knekt, P., Aromaa, A., Maatela, J., & Reunanen, A. (1995). Rheumatoid factor, chronic arthritis and mortality.

Citação norma Chicago

Heliövaara, M., K. Aho, P. Knekt, A. Aromaa, J. Maatela, and A. Reunanen. Rheumatoid Factor, Chronic Arthritis and Mortality. 1995.

MLA引文

Heliövaara, M., et al. Rheumatoid Factor, Chronic Arthritis and Mortality. 1995.