(2015). Impact Listening and Speaking.
Trích dẫn kiểu ChicagoImpact Listening and Speaking. 2015.
MLA引文Impact Listening and Speaking. 2015.
警告：这些引文格式不一定是100％准确.
APA引文
(2015). Impact Listening and Speaking.
Trích dẫn kiểu ChicagoImpact Listening and Speaking. 2015.
MLA引文Impact Listening and Speaking. 2015.