Lanumteang, Krisana, and Yutthasak Chuenchaichon. “An estimation of the number of words known by undergraduate students: A case study of paragraph level writing analyzed by Capture-Recapture Method”. Thailand Statistician 12, no. 1 (May 27, 2015): 25–35. accessed September 25, 2026. https://ph02.tci-thaijo.org/index.php/thaistat/article/view/34201.