ebrary, Inc, Coulmas, F., & Ehlich, K. (1983). Writing in focus. Mouton.
芝加哥风格引文ebrary, Inc, Florian Coulmas, 与 Konrad Ehlich. Writing in Focus. Berlin ; New York: Mouton, 1983.
MLA引文ebrary, Inc, et al. Writing in Focus. Mouton, 1983.
警告：这些引文格式不一定是100％准确.