Cita APA (7a ed.)

Kröger, H. (1990). Osteoporosis in rheumatoid arthritis. Dept. of Surgery, University of Kuopio.

Cita Chicago Style (17a ed.)

Kröger, Heikki. Osteoporosis in Rheumatoid Arthritis. Kuopio: Dept. of Surgery, University of Kuopio, 1990.

Cita MLA (8a ed.)

Kröger, Heikki. Osteoporosis in Rheumatoid Arthritis. Dept. of Surgery, University of Kuopio, 1990.