Guinness world of records:  gamer's edition 2019. 

 - [s.l.]:  Guinness World Record Limited,  2018. 
 - 215p. 
<br/><br/><label>ISBN: </label>9781912286478 
<br/><br/><label>Dewey Class. No.: </label>REF 794.8 G9482 2018