Dmitrii Bushkov และ San Sampattavanija. (2019) Marketing Strategy Development for Professional Services Firms: Case Study of Certified Audit Firms in Russia. Chulalongkorn University:ม.ป.ท.Dmitrii Bushkov และ San Sampattavanija. 2019. Marketing Strategy Development for Professional Services Firms: Case Study of Certified Audit Firms in Russia. ม.ป.ท.:Chulalongkorn University;Dmitrii Bushkov และ San Sampattavanija. Marketing Strategy Development for Professional Services Firms: Case Study of Certified Audit Firms in Russia. ม.ป.ท.:Chulalongkorn University, 2019. Print.