There are quite a few issues with that  Books are less verifiable than web links  To be clear Government funded sources include academia and they are also less verifiable if not freely accessible  What makes basic income special is that unlike virtually every other political proposition the Champion of basic income gains no privilege whatsoever over other citizens and so the only reason to champion UBI is to provide freedom and dignity to everyone  The relevance is that there is no business model for power accumulation behind it and that affects the sources available  Limiting information sources to entrenched power sources Government academia and corporate stacks the deck with biased point of view in favour of power structures or in the case of the state of this page makes it impossible to describe UBI  There is great content available on the web for UBI  Academic work is more timid less accessible and often of lower quality than other research on UBI