Stump, Paul (1997). "...a knockabout piece of studio-derived onomatopoeia, 'Several Species of Small Furry Creatures Gathered Together in a Cave and Grooving with a Pict '. It sounded uncannily literal, but Waters deflated the mystique of this oft-quoted piece of fascinating musique concrète: 'It's a very light- hearted and easy exercise . It's really just slowing down and speeding up tape.'". The Music's All that Matters: A History of Progressive Rock. London: Quartet Books. ISBN9780704380363. Retrieved 22 April 2023.
