Naphaporan Vitsavakul. 2005. A study of the relationship between physio-chemical parameters and benthic macroinvertebrates in the Pha Chi river. Field of Study Technology of Environmental Management, Mahidol University;

Naphaporan Vitsavakul. A study of the relationship between physio-chemical parameters and benthic macroinvertebrates in the Pha Chi river. . Bangkok:Mahidol University, 2005.

Naphaporan Vitsavakul. (2005) A study of the relationship between physio-chemical parameters and benthic macroinvertebrates in the Pha Chi river . Mahidol University/Bangkok.