(1997). A Multi- skills activity book.
Trích dẫn kiểu ChicagoA Multi- Skills Activity Book. 1997.
MLA引文A Multi- Skills Activity Book. 1997.
警告：這些引文格式不一定是100％准確.
APA引文
(1997). A Multi- skills activity book.
Trích dẫn kiểu ChicagoA Multi- Skills Activity Book. 1997.
MLA引文A Multi- Skills Activity Book. 1997.