<bdi><a href="https://en.wikipedia.org/wiki/en:Christian_Krohg" class="extiw" title="w:en:Christian Krohg"><span title="Norwegian painter (1852-1925)">Christian Krohg</span></a>
</bdi>
(en) The Struggle for Existence. Study - <a rel="nofollow" class="external free" href="https://www.europeana.eu/item/206411/Museu_ProvidedCHO_Nationalmuseum__Sweden_19460">https://www.europeana.eu/item/206411/Museu_ProvidedCHO_Nationalmuseum__Sweden_19460</a>. Public Domain Mark - <a rel="nofollow" class="external free" href="https://creativecommons.org/publicdomain/mark/1.0/">https://creativecommons.org/publicdomain/mark/1.0/</a>