I know their is somewhat of an existing debate on answers being required to provide sources. However, I have come across quite a few answers that are solid answers and prove to be correct but lack citations or a source in a particular (key) part of the answer. Would it be inappropriate to edit answers like this to provide the missing source and possibly even provide more legitimacy to the answer?
NOTE: The editing process is generally reviewed by peers and therefore should not be detrimental to the person who originally provided the answer.