Chhetri, Rekha, Banyong Toomsan, Wanwipa Kaewpradit, และ Viriya Limpinuntana. 2012. “Traditional Practice of Leaf Litter Harvesting and Utilization by Farmers in West-Central Bhutan: Paving the Way for Sustainable Management”. วารสารแก่นเกษตร 40 (4):363-72. https://li01.tci-thaijo.org/index.php/agkasetkaj/article/view/250643.