Spectrum :  a communicative Course in English.  Work book 4 

 - New Jersey :  Prentice Hall Regents,  1994 
 - 120 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tiếng Anh--Giao tiếp<br/>English language<br/>English language--Spoken English.
<br/><br/><label>Dewey Class. No.: </label>428.2  / SPE(4) 1994