Sarawuth Thambunya. 1999. Lithostratigraphy and sedimentology of the Khao Khad formation in the vicinity of Khao Chan, Ban Saphanhin, Amphoe Muak Lek, Changwat Saraburi. Department of Geology, Chulalongkorn University;
Sarawuth Thambunya. (1999) Lithostratigraphy and sedimentology of the Khao Khad formation in the vicinity of Khao Chan, Ban Saphanhin, Amphoe Muak Lek, Changwat Saraburi . Chulalongkorn University/Bangkok.
Sarawuth Thambunya. Lithostratigraphy and sedimentology of the Khao Khad formation in the vicinity of Khao Chan, Ban Saphanhin, Amphoe Muak Lek, Changwat Saraburi. . Bangkok:Chulalongkorn University, 1999.
Sarawuth Thambunya. (1999) Lithostratigraphy and sedimentology of the Khao Khad formation in the vicinity of Khao Chan, Ban Saphanhin, Amphoe Muak Lek, Changwat Saraburi . Chulalongkorn University/Bangkok.