1. Massiot G. Biquard. La manuel practique du manipulateur radiologiste. Paris: Maloine; 1915. p. 140–80.
2. United States Army X-ray Manual. London: Lewis; 1919.
3. Christie AC. Mobile Roentgen ray apparatus. Am J Roentegenol. 1919:358–67.
4. MacPherson WG. Official History of the War. Medical services general history, vol 1. Appendix E. London: HMSO; 1921. p. 401.
5. Cheltenham Ladies’ College War Fund. Interim Report Jan 1915. Cheltenham Ladies’ College Magazine. 1915 Spring.