<a href="https://en.wikipedia.org/wiki/Perrault%27s_Colonnade" class="extiw" title="en:Perrault's Colonnade">Colonnade of the Louvre</a>, Architecture, Plate XV, vol. 1, Diderot's <i><a href="https://en.wikipedia.org/wiki/Encyclop%C3%A9die" class="extiw" title="en:Encyclopédie">Encyclopédie</a></i>
<bdi><a href="https://en.wikipedia.org/wiki/en:Claude_Perrault" class="extiw" title="w:en:Claude Perrault"><span title="French architect and doctor of medicine">Claude Perrault</span></a>
</bdi>
User scan of <i>The Architectural Plates from the "Encyclopédie"</i>, edited by Denis Diderot. New York, Dover, 1995, p. 14. <a href="//commons.wikimedia.org/wiki/Special:BookSources/9780486279541" title="Special:BookSources/9780486279541">ISBN 9780486279541</a>.