APA citiranje

Helliwell, P. S., Howe, A., & Wright, V. (1988). Lack of objective evidence of stiffness in rheumatoid arthritis.

Citação norma Chicago

Helliwell, P S., A. Howe, and V. Wright. Lack of Objective Evidence of Stiffness in Rheumatoid Arthritis. 1988.

MLA citiranje

Helliwell, P S., A. Howe, and V. Wright. Lack of Objective Evidence of Stiffness in Rheumatoid Arthritis. 1988.