Is there a well regarded book or study on the origins of Halloween? Any thread online seems to involve a rather baseless argument between people who think it is

Is there a well regarded book or study on the origins of Halloween? Any thread online seems to involve a rather baseless argument between people who think it is the natural development of European traditions brought to the US and further iterated upon; or people who think it is an American tradition which also has some influences from immigrant groups. Essentially allowing religious and nationalistic sentiment drive the entire discussion in terms of it's paganism or who owns it.