Kittichotipun, Y. ., & Thamma-apipon, S. . (2020). Guidelines for Communication Process in Enhancing Purchasing Efficiency: A Case study of Beverage Manufacturer in Nakhonpathom Province. Journal of Innovation and Management, 5(-), 71–84. Retrieved from https://so03.tci-thaijo.org/index.php/journalcim/article/view/246775