Pukklay, Pattraporn, and Thanyarat Chuesaard. “TOTAL PHENOLIC, FLAVONOID CONTENTS AND ANTIOXIDANT ACTIVITY OF PROPOLIS EXTRACTS FROM NAN PROVINCE”. PSRU Journal of Science and Technology 6, no. 1 (April 10, 2021): 13–27. accessed April 25, 2025. https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/243598.