The cite button in OUP journals does this with a popup (image below of a paper I actually had open in my browser before your question -- Jeremy Beaulieu and I are doing math). Still an additional step to get the citation text, though.The cite button in OUP journals does this with a popup (image below of a paper I actually had open in my browser before your question -- Jeremy Beaulieu and I are doing math). Still an additional step to get the citation text, though.

Google scholar has similar options too.