APA (7th ed.) Citation

Karateev, D. E., & Olunin, Y. A. About classification of rheumatoid arthritis. IMA PRESS LLC.

Chicago Style (17th ed.) Citation

Karateev, D E., and Y A. Olunin. About Classification of Rheumatoid Arthritis. IMA PRESS LLC.

MLA (9th ed.) Citation

Karateev, D E., and Y A. Olunin. About Classification of Rheumatoid Arthritis. IMA PRESS LLC.

Warning: These citations may not always be 100% accurate.