Guritno gustianto
<p>Hari kebangkitan teknologi nasional 
</p>
Riau 2018
<a href="//commons.wikimedia.org/wiki/User:Guritno_G" title="User:Guritno G">Guritno G</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>