Parent et al (1997), qui citent G.L. Pierce et W.J. Bowers, « The Bartley-Fox Gun Law’s Short-Term Impact on Crime in Boston », Annals of the American Academy of Political and Social Science, vol. 455, 1981, p. 120 à 132.
Parent et al (1997), citing G. L. Pierce and W. J. Bowers, “The Bartley-Fox Gun Law’s Short-Term Impact on Crime in Boston,” Annals of the American Academy of Political and Social Science, Vol. 455, 1981, pp. 120-132.