Forum:SH:Sources versus external links

When would it be appropriate to put a link under Sources versus External links? For example, in the following link, development details regarding various planets, characters and locations (like the Temple of Exar Kun) are talked about. If this link were included in those articles would it be better off under Sources, External links, or not included at all, and only used as a Reference when needed? Thanks! StarsiderSWG (talk) 19:26, January 27, 2019 (UTC)