APA (7th ed.) Citation

Simons, L. (1921). Beta-ray emission from thin films of the elements exposed to Röntgen rays. Philosophical Magazine (00318086), 6th, 120.

Chicago Style (17th ed.) Citation

Simons, L. "Beta-ray Emission from Thin Films of the Elements Exposed to Röntgen Rays." Philosophical Magazine (00318086) 6th (1921): 120.

MLA (9th ed.) Citation

Simons, L. "Beta-ray Emission from Thin Films of the Elements Exposed to Röntgen Rays." Philosophical Magazine (00318086), vol. 6th, 1921, p. 120.