Islam, M. Nurul. <br/><br/>
An introduction to research methods /  
by M. Nurul Islam. 
 - 2nd, 3rd & 4th ed. 
 - Dhaka :   Mallick & Brothers,  c2018. 
 - various pages :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical reference and index. 
<br/><br/><label>ISBN: </label>9843000014223 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research -- Methodology.
<br/><br/><label>Dewey Class. No.: </label>001.42  / ISI