Kotoba no omoshiro hakugaku : Chotto chiteki ni odoroke! tanoshime! / 
Zatsugaku kenkyukai 
 - Tokyo :  Nagaoka,  1991 
 - 254 p. ;   15 cm.  
<br/><br/><label>ISBN: </label>4876834040  
<br/><br/><label>Dewey Class. No.: </label>810