(2010). RosettaStone English: Student workbook (Classroom version 3). Harrisonburg, VA: Rosetta Stone.
Trích dẫn kiểu ChicagoRosettaStone English: Student Workbook (Classroom Version 3). Harrisonburg, VA: Rosetta Stone, 2010.
Deismireacht MLARosettaStone English: Student Workbook (Classroom Version 3). Harrisonburg, VA: Rosetta Stone, 2010.
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