Praphai Chalardkid. 1994. Test development of mathematics subject matter knowledge levels of division of rational numbers for Thai preservice elementary teachers. , Oregon State University;
Praphai Chalardkid. (1994) Test development of mathematics subject matter knowledge levels of division of rational numbers for Thai preservice elementary teachers . Oregon State University/Oregon.
Praphai Chalardkid. Test development of mathematics subject matter knowledge levels of division of rational numbers for Thai preservice elementary teachers. . Oregon:Oregon State University, 1994.
Praphai Chalardkid. (1994) Test development of mathematics subject matter knowledge levels of division of rational numbers for Thai preservice elementary teachers . Oregon State University/Oregon.