Ehlers, Gillman Michael Niekerk. <br/><br/>
The oral approach to English as a second language. 

 - London :  Macmillan,  1962. 
<br/><br/> First published in 1959. 
<br/><br/>Bibliography: p. 187-194. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language -- Grammar.--English language -- Grammar.