Langer, N. (2001). Linguistic purism in action: How auxiliary tun was stigmatized in Early New High German. Walter de Gruyter.
芝加哥风格引文Langer, Nils. Linguistic Purism in Action: How Auxiliary Tun Was Stigmatized in Early New High German. Berlin ; New York: Walter de Gruyter, 2001.
MLA引文Langer, Nils. Linguistic Purism in Action: How Auxiliary Tun Was Stigmatized in Early New High German. Walter de Gruyter, 2001.
警告：这些引文格式不一定是100％准确.