(2000). Grammar practice for element student.
Trích dẫn kiểu ChicagoGrammar Practice for Element Student. 2000.
MLA引文Grammar Practice for Element Student. 2000.
警告：这些引文格式不一定是100％准确.
APA引文
(2000). Grammar practice for element student.
Trích dẫn kiểu ChicagoGrammar Practice for Element Student. 2000.
MLA引文Grammar Practice for Element Student. 2000.