^Rice، Marlin E. (2017). "George E. Ball: Ground Beetles, Mexican Bandits, and a Purple Heart". American Entomologist. ج. 63 ع. 1: 8–16. DOI:10.1093/ae/tmx008.
^Spence، John R.؛ Heming، Bruce S. (1994). "George E. Ball: Student and Exponent of Diversity". The Canadian Entomologist. ج. 126 ع. 03: 449–456. DOI:10.4039/Ent126449-3.