Sungkarat, S., C. Teerapagawong, V. Suvithayasiri, and D. Robertson. “Actinomycosis Causing Pelvic Inflammatory Disease : A Case Report”. Thai Journal of Obstetrics and Gynaecology, vol. 4, no. 1, Jan. 1992, pp. 55-58, https://he02.tci-thaijo.org/index.php/tjog/article/view/257856.