Sevin, D., Bean, K. T., & Sevin, I. (1988). Wie geht's? (3rd ed., instructor's annotated ed.). Holt, Rinehart, and Winston.
芝加哥风格引文Sevin, Dieter, Katrin T. Bean, 与 Ingrid Sevin. Wie Geht's? 3rd ed., instructor's annotated ed. New York: Holt, Rinehart, and Winston, 1988.
MLA引文Sevin, Dieter, et al. Wie Geht's? 3rd ed., instructor's annotated ed. Holt, Rinehart, and Winston, 1988.
警告:这些引文格式不一定是100%准确.