Clive Burrett. (2015) Upper Devonian (Famennian) conodonts from radiolarian cherts,Loei Terrane, Loei Province, Northeast Thailand. <i>Research & Knowledge</i>, <i>1</i>(2), 26-32.Clive Burrett. "Upper Devonian (Famennian) conodonts from radiolarian cherts,Loei Terrane, Loei Province, Northeast Thailand". Research & Knowledge 1 (2015):26-32.Clive Burrett. Upper Devonian (Famennian) conodonts from radiolarian cherts,Loei Terrane, Loei Province, Northeast Thailand. Mahasarakham University:ม.ป.ท. 2015.