Gillham, Bill <br/><br/>
Observation techniques : structured to unstructured 

 -  Continuum  London  2008 
 - xi, 112p.   
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780826496294 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Experimental method  Observation<br/>Observation techniques  Structured to unstructured<br/>Structured observation<br/>Visual ethnography