ebrary, Inc, & Lenz, A. N. (2010). Grammar between norm and variation. Peter Lang.
芝加哥风格引文ebrary, Inc, 与 Alexandra N. Lenz. Grammar Between Norm and Variation. Frankfurt am Main ; New York: Peter Lang, 2010.
MLA引文ebrary, Inc, 与 Alexandra N. Lenz. Grammar Between Norm and Variation. Peter Lang, 2010.
警告：这些引文格式不一定是100％准确.