Werner, K. P., & Patricia K. Werner; Mary Mitchell Church; Lida R. Baker. (1990). Interactions II: A Communicative grammar. New York: McGraw-Hill.
Παραπομπή Chicago StyleWerner, K. Patricia, και Patricia K. Werner; Mary Mitchell Church; Lida R. Baker. Interactions II: A Communicative Grammar. New York: McGraw-Hill, 1990.
Παραπομπή MLAWerner, K. Patricia, και Patricia K. Werner; Mary Mitchell Church; Lida R. Baker. Interactions II: A Communicative Grammar. New York: McGraw-Hill, 1990.
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