เอกสารอ้างอิง :
Sangkachai, B., Tammadid, W., Chanonmuang, P., Silprasit, K., Prueksakorn, K., & Hanpattanakit, P. (2023). Seasonal Variation Of Trace Element in Suspended Particle at Sakaerat Biosphere Reserve Forest, Nakhon Ratchasima Province. Journal Of Srinakharinwirot University (Journal Of Science And Technology), 15(30, July-December), 251596-1.