"Sometimes things that are not true are included in Wikipedia. While at first glance that may appear like a very great problem for Wikipedia, in reality is it not. In fact, it's a good thing." - Wikipedia.
That's the one that Tom is promoting on the Missing Lynx forum. He admits to not being an expert, so I suspect it's more of a coffee table book. Also, as it would be a very small book if it was truly only about German WW1 AFVs, he says he has included pictures of the 'beute' AFVs.
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In wine there is wisdom, in beer there is freedom, in water there is bacteria.