<bdi><a href="https://en.wikipedia.org/wiki/en:Giuseppe_Piazzi" class="extiw" title="w:en:Giuseppe Piazzi"><span title="Italian Catholic priest of the Theatine order, mathematician, and astronomer (1746-1826)">Giuseppe Piazzi</span></a>
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<a rel="nofollow" class="external text" href="https://archive.org/details/DellaScopertaDelNuovoPianetaCerereFerdinandea">Internet Archive (ETH-Bibliothek Zürich)</a>