<p>I just found that on the <a href="https://physics.stackexchange.com/">Physics Stack Exchange</a> they have the option to <a href="https://physics.meta.stackexchange.com/questions/7056/what-is-the-function-of-cite-below-each-question-answer">cite</a> answers and questions:</p>

<p><a href="https://i.stack.imgur.com/lDnfb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lDnfb.png" alt="cite"></a></p>

<p>As mentioned in <a href="https://meta.stackexchange.com/questions/189213/add-the-ability-to-cite-questions-and-answers">this meta post</a>, this option is also available for example on the <a href="https://math.stackexchange.com/">Mathematics</a> and <a href="https://cstheory.stackexchange.com/">Theoretical Computer Science</a> Stack Exchange sites. There is no clear answer to <a href="https://meta.stackexchange.com/questions/189213/add-the-ability-to-cite-questions-and-answers">a meta question</a> regarding why this option is not globally available on all StackExchange sites, but the comments are slightly negative. I agree that in most cases it is not a good idea to use this in scientific articles, as also <a href="https://stats.meta.stackexchange.com/questions/2051/can-i-cite-a-question-response-to-an-academic-paper">discussed here</a>.
However, when for example writing a (technical) report, this option might be useful. Moreover, the option already seems to exist on the StackExchange network.</p>
