Task reading 
/ Evelyn Davies, Norman Whitney, Laurie Blass 
. - Cambridge  : Cambridge university press, 1990
. - IV-123 p.  : ill., couv. ill.  ; 28 cm. 
<br/><br/><label>ISBN: </label>9780521358101 
<br/><br/><label>Universal Decimal Class. No.: </label>802.0