Dyfyniad APA

(2010). RosettaStone English: Student workbook (Classroom version 3). Harrisonburg, VA: Rosetta Stone.

Dyfyniad Arddull Chicago

RosettaStone English: Student Workbook (Classroom Version 3). Harrisonburg, VA: Rosetta Stone, 2010.

Dyfyniad MLA

RosettaStone English: Student Workbook (Classroom Version 3). Harrisonburg, VA: Rosetta Stone, 2010.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.