Tippaporn Sophonpattanakit. 2010. Selection of bacilli capable of removing ammonia, nitrite and nitrate. Bangkok:King Mongkut's University of Technology Thonburi; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KMUTT.res.2010.23
Tippaporn Sophonpattanakit. (2010) Selection of bacilli capable of removing ammonia, nitrite and nitrate (รายงานผลงานวิจัย). King Mongkut's University of Technology Thonburi:Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KMUTT.res.2010.23
Tippaporn Sophonpattanakit. Selection of bacilli capable of removing ammonia, nitrite and nitrate. Bangkok:King Mongkut's University of Technology Thonburi, 2010. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KMUTT.res.2010.23
Tippaporn Sophonpattanakit. (2010) Selection of bacilli capable of removing ammonia, nitrite and nitrate (รายงานผลงานวิจัย). King Mongkut's University of Technology Thonburi:Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KMUTT.res.2010.23