Wisniewska, I. (2007). Step language for everyday life forward 2. New York: Oxford University Press.
Trích dẫn kiểu ChicagoWisniewska, Ingrid. Step Language for Everyday Life Forward 2. New York: Oxford University Press, 2007.
MLA citiranjeWisniewska, Ingrid. Step Language for Everyday Life Forward 2. New York: Oxford University Press, 2007.
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