(1997). Focus on advanced English C.A.E: Grammar practice. Edinburgh Gate, Halow: Addison-Wesley Longman.
Trích dẫn kiểu ChicagoFocus On Advanced English C.A.E: Grammar Practice. Edinburgh Gate, Halow: Addison-Wesley Longman, 1997.
MLA引文Focus On Advanced English C.A.E: Grammar Practice. Edinburgh Gate, Halow: Addison-Wesley Longman, 1997.
警告:這些引文格式不一定是100%准確.