Walker, J. S. (2000). Permissible dose: A history of radiation protection in the twentieth century. University of California Press.

Walker, J. Samuel. Permissible Dose: A History of Radiation Protection in the Twentieth Century. Berkeley: University of California Press, 2000.

Walker, J. Samuel. Permissible Dose: A History of Radiation Protection in the Twentieth Century. University of California Press, 2000.