Duff, Scott A.; Miller, John M. (C.W.O.). The M14 owner's guide and match conditioning instructions. [s.l.] : S.A. Duff Publications, 1996. Dostupné online.ISBN 978-1-888722-07-9. S. 20–21.
Stevens, R. Blake. Us Rifle M14: From John Garand to the M21. [s.l.] : Collector Grade Publications, June 1991. Dostupné online.ISBN 978-0-88935-110-3. S. 245.