Usa Jeenjenkit และ Bhinyo Panijpan. (2010) Guided-inquiry units on factors affecting chemical reaction rate for secondary students and pre-service teachers. Mahidol University:ม.ป.ท.Usa Jeenjenkit และ Bhinyo Panijpan. 2010. Guided-inquiry units on factors affecting chemical reaction rate for secondary students and pre-service teachers. ม.ป.ท.:Mahidol University;Usa Jeenjenkit และ Bhinyo Panijpan. Guided-inquiry units on factors affecting chemical reaction rate for secondary students and pre-service teachers. ม.ป.ท.:Mahidol University, 2010. Print.