UN Scientific Committee: Sources and effects of ionizing radiation : United Nations Scientific Committee on the Effects of Atomic Radiation : UNSCEAR 2010 report to the General Assembly, with scientific annexes, s. 27, 28, 70-71. Annex A 1: Medical radiation exposures. New York: UNITED NATIONS PUBLICATION, 2010. ISBN 978-92-1-142274-0. Teoksen verkkoversio (pdf) (viitattu 27.6.2013). (englanniksi)