Sevin, D., Bean, K. T., & Sevin, I. (1988). Wie geht's? (3rd ed., instructor's annotated ed.). Holt, Rinehart, and Winston.
Chicago Style (17. basım) AtıfSevin, Dieter, Katrin T. Bean, ve Ingrid Sevin. Wie Geht's? 3rd ed., instructor's annotated ed. New York: Holt, Rinehart, and Winston, 1988.
MLA (9th ed.) AtıfSevin, Dieter, et al. Wie Geht's? 3rd ed., instructor's annotated ed. Holt, Rinehart, and Winston, 1988.
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