<i>Pensées sur l'art moderne</i> [deel 1].
<bdi><a href="https://en.wikipedia.org/wiki/en:Theo_van_Doesburg" class="extiw" title="w:en:Theo van Doesburg"><span title="Dutch architect, painter, draughtsman and writer (1883-1931)">Theo van Doesburg</span></a>
</bdi>
1914
<i>Eenheid</i>, no. 218 (8 August 1914): [p. 3].