(2010). RosettaStone English: Student workbook (Classroom version 3). Harrisonburg, VA: Rosetta Stone.
Chicago-stil citatRosettaStone English: Student Workbook (Classroom Version 3). Harrisonburg, VA: Rosetta Stone, 2010.
MLA-referensRosettaStone English: Student Workbook (Classroom Version 3). Harrisonburg, VA: Rosetta Stone, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.