Schweber, Silvan. «Chapter 5». A: QED and the Men Who Did it: Dyson, Feynman, Schwinger, and Tomonaga. Princeton University Press, 1994, p. 230. ISBN 978-0-691-03327-3.
Guralnik, G. S. «The History of the Guralnik, Hagen and Kibble development of the Theory of Spontaneous Symmetry Breaking and Gauge Particles». International Journal of Modern Physics A, 24, 14, 2009, pàg. 2601–27. arXiv: 0907.3466. Bibcode: 2009IJMPA..24.2601G. DOI: 10.1142/S0217751X09045431.
Guralnik, G. S. «The History of the Guralnik, Hagen and Kibble development of the Theory of Spontaneous Symmetry Breaking and Gauge Particles». International Journal of Modern Physics A, 24, 14, 2009, pàg. 2601–27. arXiv: 0907.3466. Bibcode: 2009IJMPA..24.2601G. DOI: 10.1142/S0217751X09045431.
Guralnik, G. S. «The History of the Guralnik, Hagen and Kibble development of the Theory of Spontaneous Symmetry Breaking and Gauge Particles». International Journal of Modern Physics A, 24, 14, 2009, pàg. 2601–27. arXiv: 0907.3466. Bibcode: 2009IJMPA..24.2601G. DOI: 10.1142/S0217751X09045431.