[NTG-context] Question about a link in a footnote to cite

Hello list! I would like to know: If I have this in a footnote \footnote\cite Truman, Harry: Inaugural Address. 1949. Letzter Zugriff: 10.07.2013, http:// http://www.presidency.ucsb.edu/ws/?pid=13282 www.presidency.ucsb.edu/ws/?pid=13282. [Hervorhebung I.G.] whats the right way? \startbuffer[biblio] @url and I have an author and a year, do I have to write it here? } \stopbuffer \mainlanguage[en] \usebtxdataset[biblio.buffer] \starttext \startbodymatter \startchapter[title={Me}] That's me \footnote{\cite[url, author, year]? \stopchapter \stopbodymatter \startbackmatter \startchapter[title={Bibliography}] \placelistofpublications \stopchapter \stopbackmatter \stoptext