* {{cite book|last=Debus|first=Allen G.|title=World Who's who in Science: A Biographical Dictionary of Notable Scientists from Antiquity to the Present|location=Chicago |publisher=Marquis-Who's Who|year=1968|isbn=978-0-8379-1001-7|oclc=451839|ref=harv}}
* {{cite book|last=Hoddeson|first=Lillian|first2=Paul W.|last2=Henriksen|first3=Roger A.|last3=Meade|first4=Catherine L.|last4=Westfall|title=Critical Assembly: A Technical History of Los Alamos During the Oppenheimer Years, 1943–1945|location=New York|publisher=Cambridge University Press|year=1993|isbn=0-521-44132-3|oclc=26764320|ref=harv }}