Bansal, M., and T. Rai. “A Case of Psoriatic Arthritis With Severe Deformities Resembling Rheumatoid Arthritis”. Journal of Pakistan Association of Dermatologists, vol. 23, no. 4, Dec. 2016, pp. 458-60, https://www.jpad.com.pk/index.php/jpad/article/view/329.