In this case, I think that confirmation can be found in many quantum mechanics textbooks (I however cannot point you to a given one and a given page number right now as I don't have them with me).
Btw, this is exactly how I introduced the microscopic world to my students when I had to lecture quantum mechanics. That's actually part of my lecture #1 where I mix the scope of quantum mechanics, some description of the microscopic world and some history of science.