<bdi><a href="https://en.wikipedia.org/wiki/en:Silpa_Bhirasri" class="extiw" title="w:en:Silpa Bhirasri"><span title="Italian artist &amp; professor">Silpa Bhirasri</span></a>
</bdi>
Feroci, C. (1943). <i>Theory of Colours</i>. Bangkok: Phrachan.