APA (7th ed.) Citation

MP, C., PL, O., RC, B., & JM, B. (1974). Letter: Siemens teletherapy caesium unit. The British journal of radiology, 47(564), 913. https://doi.org/10.1259/0007-1285-47-564-913

Chicago Style (17th ed.) Citation

MP, Casebow, Ormsby PL, Buchan RC, and Brindle JM. "Letter: Siemens Teletherapy Caesium Unit." The British Journal of Radiology 47, no. 564 (1974): 913. https://doi.org/10.1259/0007-1285-47-564-913.

MLA (9th ed.) Citation

MP, Casebow, et al. "Letter: Siemens Teletherapy Caesium Unit." The British Journal of Radiology, vol. 47, no. 564, 1974, p. 913, https://doi.org/10.1259/0007-1285-47-564-913.