Chen และผู้แต่งคนอื่นๆ. 2007. A methodology of teaching Hanyu pinyin for elementary students at international schools in Thailand. Field of Study Chinese language, Chulalongkorn University;
Chen และผู้แต่งคนอื่นๆ. (2007) A methodology of teaching Hanyu pinyin for elementary students at international schools in Thailand . Chulalongkorn University/Bangkok.
Chen และผู้แต่งคนอื่นๆ. A methodology of teaching Hanyu pinyin for elementary students at international schools in Thailand. . Bangkok:Chulalongkorn University, 2007.
Chen และผู้แต่งคนอื่นๆ. (2007) A methodology of teaching Hanyu pinyin for elementary students at international schools in Thailand . Chulalongkorn University/Bangkok.