Chi-fen Chen และผู้แต่งคนอื่นๆ. (2008) Syntactic and semantic analysis of Mandarin Chinese preposition "gei" and its teaching applications. Chulalongkorn University:ม.ป.ท.Chi-fen Chen และผู้แต่งคนอื่นๆ. 2008. Syntactic and semantic analysis of Mandarin Chinese preposition "gei" and its teaching applications. ม.ป.ท.:Chulalongkorn University;Chi-fen Chen และผู้แต่งคนอื่นๆ. Syntactic and semantic analysis of Mandarin Chinese preposition "gei" and its teaching applications. ม.ป.ท.:Chulalongkorn University, 2008. Print.