There are many problems with links to online sources. Most if not all of the websites will at some point go away.
The answer is provide details about the information.
Instead of only providing a link to historicalrecords.com
Describe the information:
Birth: Samuel Richards was born on 23 September 1863 at 73 Queen St, Smith Township, X County, this place.
1871 Census Samuel is now living at 97 Mill Street, Queensville, Howick Township, X County, this place with his parents Bill and Jane and siblings William and Sarah
And continue this pattern, it can go in the biography or it can be added as plain text to the current online source.
The information itself is not likely to totally disappear, but the current links will at some time disappear.
In that case, if you want an online source, you can search for birth, marriage, death, census, historical records for X place. If you have factual information about the family members, where they lived etc you can find a new link if you find it necessary.
If all you have is a link, with very little info in the link and now it doesn't work, you may have trouble finding a new source.
We need to remember that sourcing and providing accurate information is not something that arrived with the advent of online research, it has been happening for a long time, the internet just makes it easier.
And also can make it easier to make mistakes, as we all know everything on line is not necessarily accurate or correct for the person named on the record.