APA (7th ed.) Citation

Worsnop, B. L., & Chalklin, F. C. (1950). X-rays (3rd ed.). Methuen.

Chicago Style (17th ed.) Citation

Worsnop, B. L., and F. C. Chalklin. X-rays. 3rd ed. London: Methuen, 1950.

MLA (8th ed.) Citation

Worsnop, B. L., and F. C. Chalklin. X-rays. 3rd ed. Methuen, 1950.