APA (7th ed.) Citation

Johns, H. E. (1961). The physics of radiology (Second edition.). Thomas.

Chicago Style (17th ed.) Citation

Johns, Harold Elford. The Physics of Radiology. Second edition. Springfield, Ill.: Thomas, 1961.

MLA (9th ed.) Citation

Johns, Harold Elford. The Physics of Radiology. Second edition. Thomas, 1961.