توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Williamson, L., Dalbeth, N., Dockerty, J., Gee, B., Weatherall, R., & Wordsworth, P. (2004). NAIL DISEASE IN PSORIATIC ARTHRITIS: CLINICALLY IMPORTANT, POTENTIALLY TREATABLE AND OFTEN OVERLOOKED.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Williamson, L., N. Dalbeth, J. Dockerty, B. Gee, R. Weatherall, و P. Wordsworth. NAIL DISEASE IN PSORIATIC ARTHRITIS: CLINICALLY IMPORTANT, POTENTIALLY TREATABLE AND OFTEN OVERLOOKED. 2004.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Williamson, L., et al. NAIL DISEASE IN PSORIATIC ARTHRITIS: CLINICALLY IMPORTANT, POTENTIALLY TREATABLE AND OFTEN OVERLOOKED. 2004.