Juthathip Audsabumrungrat และ Sompong Pornupatham. (2011) The impact of guidance levels and justification requirement on determination of auditors’ planning materiality. Chulalongkorn University:ม.ป.ท.Juthathip Audsabumrungrat และ Sompong Pornupatham. 2011. The impact of guidance levels and justification requirement on determination of auditors’ planning materiality. ม.ป.ท.:Chulalongkorn University;Juthathip Audsabumrungrat และ Sompong Pornupatham. The impact of guidance levels and justification requirement on determination of auditors’ planning materiality. ม.ป.ท.:Chulalongkorn University, 2011. Print.