Chayamarit, Kongkanda, and Rachun Pooma. “Obituary: Prof. Dr. Christian Puff (1949–2013)”. Thai Forest Bulletin (Botany), no. 41 (November 24, 2014): i. Accessed December 5, 2022. https://li01.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/24088.