APA (7th ed.) Citation

Soni, A., & Tracey, I. (2015). Pain characterization in knee osteoarthritis.

Chicago Style (17th ed.) Citation

Soni, A., and I. Tracey. Pain Characterization in Knee Osteoarthritis. 2015.

MLA (9th ed.) Citation

Soni, A., and I. Tracey. Pain Characterization in Knee Osteoarthritis. 2015.

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