Dul, Jan, <br/><br/>
Case study methodology in business research / Jan Dul and Tony Hak. 

 -  Boston, MA : Elsevier, 2007. 
 - xxiv, 302 p. : ill. ; 25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business --Research --Methodology.