Cassidy 2005, pp. 348–349 "Lyndon B. Johnson – Remarks Upon Presenting the Fermi Award to Dr. J. Robert Oppenheimer".
Consultado o 11 de decembro de 2010.  Cassidy 2005, pp. 348–349 "Lyndon B. Johnson – Remarks Upon Presenting the Fermi Award to Dr. J. Robert Oppenheimer".