ใสเกื้อ อังคณา. “Isolation of Acidotolerant/Acidophilic Photosynthetic Bacteria from Peat Soils in Nakhon Si Thammarat Province and the Promoting of Biomass and 5-Aminolevulinic Acid Production by Plackett-Burman Technique”. Progress in Applied Science and Technology 3, no. 2 (December 12, 2013): 75–89. Accessed May 6, 2024. https://ph02.tci-thaijo.org/index.php/past/article/view/243236.