PENGSENG, P., & E BOYD, C. (2011). Assessment of Fertilizer Application Intervals for Giant Gourami (Osphronemus goramy Lacepede) in Ponds. Walailak Journal of Science and Technology (WJST), 8(1), 33–40. Retrieved from https://wjst.wu.ac.th/index.php/wjst/article/view/9