I noticed that you used Freereg as a source on his fathers profile.
If thats the same place you foud Henry's baptism I would use their citation as it hopefully gives a stable URL .Personally I would slightly amend it.
Go to the record, press generate citation, choose wikitree. My variation would be to add son of John and Audrey after Henry Tillie in the citation
Otherwise check out England reliable sources https://www.wikitree.com/wiki/Space:England_Project_Reliable_Sources