APA (7th ed.) Citation

Zimmermann, A., & Udvarhelyi, I. The treatment of the rheumatoid hip.

Chicago Style (17th ed.) Citation

Zimmermann, A., and I. Udvarhelyi. The Treatment of the Rheumatoid Hip.

MLA (9th ed.) Citation

Zimmermann, A., and I. Udvarhelyi. The Treatment of the Rheumatoid Hip.

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