Nurhasanah, S. H., A. Palmasari, D. Setyaningtyas, S. Sujati, and O. Setyawati. “Recurrent Aphthous Stomatitis (RAS) and Exfoliative Cheilitis in Elderly Psoriasis Sufferer”. Journal of Dentomaxillofacial Science, vol. 1, no. 1, Apr. 2016, pp. 63-66, doi:10.15562/jdmfs.v1i1.29.