Douglas,  H Brown. <br/><br/>
Teaching by principles :  an interactive approach to language pedagogy. 

 - 3rd ed. 
 - 10 Bank street, White Plains :  Pearson Longman,  2007. 
 - xvii, 569 p.  ill.  23 cm. 
<br/><br/>includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>139780136127116 
<br/><br/><label>Dewey Class. No.: </label>418.0071 BRO