I am very confused by this. The article cited from the White House Press Secretary is a presidential paper. APA states that legal citations should use Bluebook citation. Presidential memoranda is a type of presidential paper. Bluebook has an entirely different citation method for presidential papers. What is the proper APA citation for presidential memorandum such as this one: https://obamawhitehouse.archives.gov/the-press-office/presidential-memorandum-hospital-visitation Also found at: https://www.gpo.gov/fdsys/search/pagedetails.action?collectionCode=CPD&browsePath=2010%2F04&granuleId=&packageId=DCPD-201000267&fromBrowse=true

I would have to agree with David. Websites (even ones much more stable than Wikipedia) frequently change resulting in dead links. Have you ever tried clicking on a link to an old news article (sometime those links end up dead after just a couple years)? I think that the APA’s decision not to require reterival dates was poorly thought through (although perhaps articles with DOIs shouldn’t need retrieval dates).