FWIW, the citation to Raymond Chen's blog is specifically in relation to the claim that it was reverse engineered from the MS-DOS port due to the source code being unavailable.

Prior to the edit there was a citation to the game itself for both Tony and Ed Halley as the game's development but the guy who added in the reverse engineering anecdote from chen's blog split the sentence so that the citation for the names of the game's developers is only applied to the other guy.

https://en.wikipedia.org/w/index.php?title=Chip%27s_Challeng...