Complex sentence: As noted by Cairncross (1988), it appears that the source of the Weekly World News article is Barritt (1982), an article that appeared in a 1982 issue of Scopes Magazine about these objects.
Split into simpler sentences: As noted by Cairncross, it appears that the source of the Weekly World News article is an earlier article by Barritt. This article appeared in a 1982 issue of Scopes Magazine about these objects.