Henning, Grant. <br/><br/>
A Guide to language testing :  development, evaluation, research / 
Grant Henning. 
 - Boston, Mass. :  Heinle & Heinle,  1987. 
 - vii, 198 p. ;  23 cm. 
<br/><br/>Bibliography : p. 159-164. 
<br/><br/><label>ISBN: </label>083842693X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Study and teaching--Foreign speakers.<br/>English language--Ability testing.