Celik, O., S. Budak, G. Ekin, I. Akarken, and Y. O. Ilbey. “A Case With Primary Signet Ring Cell Adenocarcinoma of the Prostate and Review of the Literature”. Archivio Italiano Di Urologia E Andrologia, vol. 86, no. 2, June 2014, pp. 148-9, doi:10.4081/aiua.2014.2.148.