(2003). College writing skills.
Trích dẫn kiểu ChicagoCollege Writing Skills. 2003.
MLA引文College Writing Skills. 2003.
警告：这些引文格式不一定是100％准确.
APA引文
(2003). College writing skills.
Trích dẫn kiểu ChicagoCollege Writing Skills. 2003.
MLA引文College Writing Skills. 2003.