Kowark, A., Adam, C., & Henzler, D. (2018). Improve hip fracture outcome in the elderly patient (iHOPE): A study protocol for a pragmatic, multicentre randomised controlled trial to test the efficacy of spinal versus general anaesthesia. BMJ Open.
Chicago Style (17. basım) AtıfKowark, Ana, Christian Adam, ve Dietrich Henzler. "Improve Hip Fracture Outcome in the Elderly Patient (iHOPE): A Study Protocol for a Pragmatic, Multicentre Randomised Controlled Trial to Test the Efficacy of Spinal Versus General Anaesthesia." BMJ Open 2018.
MLA (8th ed.) AtıfKowark, Ana, et al. "Improve Hip Fracture Outcome in the Elderly Patient (iHOPE): A Study Protocol for a Pragmatic, Multicentre Randomised Controlled Trial to Test the Efficacy of Spinal Versus General Anaesthesia." BMJ Open, 2018.