Cita APA (7th ed.)

Schumacher, H. R., Klippel, J. H., & Koopman, W. J. (1993). Primer on the rheumatic diseases (10th ed.). Arthritis Foundation.

Cita Chicago (17th ed.)

Schumacher, H. Ralph, John H. Klippel, i William J. Koopman. Primer on the Rheumatic Diseases. 10th ed. Atlanta, GA: Arthritis Foundation, 1993.

Cita MLA (9th ed.)

Schumacher, H. Ralph, et al. Primer on the Rheumatic Diseases. 10th ed. Arthritis Foundation, 1993.