Gatmaitan, Luis P. <br/><br/>
"Si Duglit, ang dugong makulit: Duglit, the pesky red blood cell" 

 - Manila  Hiyas Publishing  1995 
 - 31 
<br/><br/><label>ISBN: </label>971-511-397-4 
<br/><br/><label>Dewey Class. No.: </label>G227s