Thank you for this information, Barbara. I don't use Facebook, so I would have missed it.
This is from a DAR members website (CitingDARSources.pdf). The document is entitled "Citing, Quoting, and Reproducing DAR Sources" from 2016.
As far as citing the Genealogical Research System, it says:
Citation for the GRS Database For the Ancestor Record: Daughters of the American Revolution, “Ancestor Database.” database, Genealogical Research System (http://services.dar.org/public/dar_research/ : accessed [date]), [ancestor name, ancestor number].
Fictitious example: Daughters of the American Revolution, “Ancestor Database.” database, Genealogical Research System (http://services.dar.org/public/dar_research/ : accessed 1 January 2015), John Smith, A555555.