Bethesda cervical cytology interobserver reproducibility: have we reached the sweet spot?. Davey DD. J Am Soc Cytopathol. 2017 Jul - Aug;6(4):127-130. doi: 10.1016/j.jasc.2017.05.002. Epub 2017 May 12. PMID: 31043265
Second edition of 'The Bethesda System for reporting cervical cytology' - atlas, website, and Bethesda interobserver reproducibility project. Nayar R, Solomon D. Cytojournal. 2004 Oct 21;1(1):4. doi: 10.1186/1742-6413-1-4. PMID: 15504231