El-Shereef, R. R., Ali, A., Darwish, A., Ali, F., Ibrahim, M., & Hamdy, L. (2015, January). Validity of magnetic resonance image and HLA-B27 in early detection of sacroiliitis in Egyptian spondyloarthropathic patients. Egyptian Rheumatology and Rehabilitation.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)El-Shereef, Rawhya R., Amal Ali, Ayman Darwish, Fatma Ali, Mohammed Ibrahim, و Lamia Hamdy. "Validity of Magnetic Resonance Image and HLA-B27 in Early Detection of Sacroiliitis in Egyptian Spondyloarthropathic Patients." Egyptian Rheumatology and Rehabilitation Jan. 2015.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)El-Shereef, Rawhya R., et al. "Validity of Magnetic Resonance Image and HLA-B27 in Early Detection of Sacroiliitis in Egyptian Spondyloarthropathic Patients." Egyptian Rheumatology and Rehabilitation, Jan. 2015.