I've read over QuickLesson 26. I've done this several times. However; I still find citing the source of the Ancestry info to be the single most frustrating aspect of using their data.
I understand that we should use the form, "citing ' [Ancestry's stated source-of-source]'." Unfortunately; the punctuation, element ordering and lack of completeness of the stated information, often drives me crazy. The latter point introduces the risk that the data cannot easily be found, even of the noted original site.