I am learning how to include sources in a proper way in WikiTree. As a historian I try to quote the actual, origin source and the archive first. I think that an online link without reliable information about the source itself is not accurate enough. But of course it is very useful and important to add a link if a source can be found online, for instance at Familysearch, Ancestry, szukajwarchiwach.gov.pl, Matricula Online or Archion (for German Protestant parish registers). Some of these sites have a paywall (like ancestry and archion), others not and I always try to add the information "Paywall" (gebührenpflichtig) to the link.
In the case of ancestry I just realized that the links to digitalized sources at ancestry might not be very helpful in a number of cases. One and the same "collection" and actual source/document (in this case German civil birth, marriage and death records) appears with a different link, depending on the county in which you have booked the ancestry package. ancestry.com and ancestry.uk links do not work for me although I have a bigger package booked at ancestry.de - and my ancestry.de link to the same document might not work for others, like decendents of the people this record deals with who live in the USA.
Any idea or tool how to deal with this problem?
Kind regards and Merry Christmas to all of you, Jens
P.S. 1:
And after ancestry do not seem to offer permalinks (is this correct?) it is as well a question which format a link to a source digitalized by ancestry should have:
www.ancestry.xx/imageviewer/collections/...
or www.ancestry.xx/discoveryui-content/view/...
P.S: If there are legal, reliable sites on which the digital version of a certain source would be accessable without a paywall, we should prefer this. For records of a great number of civil register records and parish registers from Pomerania/Pommern, Silesia/Schlesien and other regions within the borders of today`s Poland szukajwarchiwach.gov.pl is a good example and there are other examples for records in the Czech Republic and other European countries.