You need to undo all those tags, or at least not object in the event I do. I specifically limited myself to what the canon descriptions said in the main text. And they are canon. The article makes it explicitly clear that these were developed for the game itself, and would have been published there if more game books had been forthcoming. They are in no way "fan pro".
But regardless of what their original intent may have been, they were published in Dragon Magazine, ergo, "Dragon Magazine source".
Some people consider Dragon Magazine articles to be 100% canon across the board, others consider only those by official developers, and still others consider them all apocryphal (i.e. "house rules").
If we are talking about "A Fistful of Credits", it is indisputably a Dragon Magazine source.
I also don't see where it says that it was oficially developed "for the game"; The article itself only says that it is developed for the AD rules, not for Zeb. We have no indication that it underwent review or not.
"Editors introduction - We've received a lot of requests for more equipment that can be used on star-faring expeditions, and this article will hopefully fill in some of the gaps. The following material was produced before SFAC 3, Zebulon's Guide to Frontier Space, was released. It fits in with the original STAR FRONTIERS® game system, and it may be used by gamers who do not have access to the former product. Some modifications will be required if the Zebulon's Guide revisions are being employed in a campaign."
Emphasis mine. The highlighted sentence does not indicate if it was developed for official inclusion in the game or not.