Keith Miller Robert. (2005). Motives for Writing. American: McGraw -Hill.
Trích dẫn kiểu ChicagoKeith Miller Robert. Motives for Writing. American: McGraw -Hill, 2005.
MLA引文Keith Miller Robert. Motives for Writing. American: McGraw -Hill, 2005.
警告：这些引文格式不一定是100％准确.