Kamocki, Zbigniew Krzysztof, et al. “Significance of Selected Morphological and Histopathological Parameters of Colon Tumors As Prognostic Factors of Cancer Spread”. Turkish Journal of Gastroenterology, vol. 28, no. 4, Jan. 2017, pp. 248-53, doi:10.5152/tjg.2017.16734.