Chansiri Pruksaphong และ Narapong Srivisal. (2019) The effect of petroleum and petrochemical prices on abnormal return and firm profitability. Chulalongkorn University:ม.ป.ท.Chansiri Pruksaphong และ Narapong Srivisal. 2019. The effect of petroleum and petrochemical prices on abnormal return and firm profitability. ม.ป.ท.:Chulalongkorn University;Chansiri Pruksaphong และ Narapong Srivisal. The effect of petroleum and petrochemical prices on abnormal return and firm profitability. ม.ป.ท.:Chulalongkorn University, 2019. Print.