Kanjanavirojkul, N., L. Himakoun, O. Arayasen, and P. Sanyanusin. “Malignant Cells in Effusion by Wright’s Stain and Papanicoloau Stain”. Srinagarind Medical Journal, vol. 6, no. 1, Nov. 2013, pp. 9-14, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13554.