Suwanphakdee, Chalermpol, David A. Simpson, and Pranom Chantaranothai. “Three New Species of Piper (Piperaceae) from Thailand”. Thai Forest Bulletin (Botany), no. 40 (November 24, 2014): 31–37. Accessed March 28, 2024. https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24124.