Citing Wikipedia

To my surprise, I found that a NBER Working Paper cited Wikipedia as a source. One of my college lecturer once told me that I should not use Wikipedia as a reference in academic paper. Even, Wikipedia itself has a page about Citing Wikipedia:
We advise special caution when using Wikipedia as a source for research projects. Normal academic usage of Wikipedia and other encyclopedias is for getting the general facts of a problem and to gather keywords, references and bibliographical pointers, but not as a source in itself. Remember that Wikipedia is a wiki. Anyone in the world can edit an article, deleting accurate information or adding false information, which the reader may not recognize. Thus, you probably shouldn't be citing Wikipedia.
If an article in NBER starting to use Wikipedia, can we also cite it in our paper?