Lansford, Lewis <br/><br/>
Unlock :  listening & speaking skills.  Student's book with online workbook / 
Lansford, Lewis 
 - Cambridge :  Cambridge Discovery Education,  2014 
 - 223 p. ;  27 cm. +  1 DVD-ROM 
<br/><br/> Title on DVD : Presentation plus 
<br/><br/><label>ISBN: </label>9781107634619 9781107643819 (dvd) 110763461X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Study and teaching--Foreign speakers<br/>English language--Spoken English--Study and teaching--Foreign speakers<br/>English language--Study and teaching--Foreign speakers--Audio-visual aids