Phitsinee Koad และ Anchalee Chayanuvat. (2016) Using CIPP Model to Investigate an Appropriate English Course for Learners A Case Study of the Coffee, Tea, Me and English Preparatory Course. โรงพิมพ์ดีชัย บจก.:ม.ป.ท.Phitsinee Koad และ Anchalee Chayanuvat. 2016. Using CIPP Model to Investigate an Appropriate English Course for Learners A Case Study of the Coffee, Tea, Me and English Preparatory Course. ม.ป.ท.:โรงพิมพ์ดีชัย บจก.;Phitsinee Koad และ Anchalee Chayanuvat. Using CIPP Model to Investigate an Appropriate English Course for Learners A Case Study of the Coffee, Tea, Me and English Preparatory Course. ม.ป.ท.:โรงพิมพ์ดีชัย บจก. 2016. Print.