Sean M. Carroll, Zachary H. Rhoades e Jon Leven, Dark Matter, Dark Energy: The Dark Side of the Universe, Guidebook Part 2, Chantilly, VA, The Teaching Company, 2007, pp. 59, ISBN 978-1-59803-350-2, OCLC 288435552. URL consultato il 28 marzo 2022.
«...Standard Model of Particle Physics: The modern theory of elementary particles and their interactions ... It does not, strictly speaking, include gravity, although it's often convenient to include gravitons among the known particles of nature...»
