Waewtaa Thongra-ar. 1994. Effects of cadmium and zinc on growth of marine phytoplankton, Thalassiosira weissflogii and Heterosigma akashiwo. Chonburi:Burapha University;
Waewtaa Thongra-ar. (1994) Effects of cadmium and zinc on growth of marine phytoplankton, Thalassiosira weissflogii and Heterosigma akashiwo (รายงานผลงานวิจัย). Burapha University:Chonburi.
Waewtaa Thongra-ar. Effects of cadmium and zinc on growth of marine phytoplankton, Thalassiosira weissflogii and Heterosigma akashiwo. Chonburi:Burapha University, 1994.
Waewtaa Thongra-ar. (1994) Effects of cadmium and zinc on growth of marine phytoplankton, Thalassiosira weissflogii and Heterosigma akashiwo (รายงานผลงานวิจัย). Burapha University:Chonburi.