(1997). Life line elementary: Student’s book.
Trích dẫn kiểu ChicagoLife Line Elementary: Student’s Book. 1997.
MLA引文Life Line Elementary: Student’s Book. 1997.
警告：这些引文格式不一定是100％准确.
APA引文
(1997). Life line elementary: Student’s book.
Trích dẫn kiểu ChicagoLife Line Elementary: Student’s Book. 1997.
MLA引文Life Line Elementary: Student’s Book. 1997.