張美. 清末北京官話的句法特點——以幾部域外北京官話資料爲例: The Syntactic Features of Beijing Mandarin in the Late Qing Dynasty- A Case Study of a Series of Colloquial Pekinese Documents Abroad. sinohumanitas [Internet]. 2009 Sep. 1 [cited 2024 May 5];15:137-63. Available from: https://ejournals.lib.hkbu.edu.hk/index.php/sinohumanitas/article/view/2566