APA (7th ed.) Citation

Roder, H. (1932). Superposition of two modulated radio frequencies. Proceedings of the IRE, 20, 1962. https://doi.org/10.1109/JRPROC.1932.227481

Chicago Style (17th ed.) Citation

Roder, H. "Superposition of Two Modulated Radio Frequencies." Proceedings of the IRE 20 (1932): 1962. https://doi.org/10.1109/JRPROC.1932.227481.

MLA (9th ed.) Citation

Roder, H. "Superposition of Two Modulated Radio Frequencies." Proceedings of the IRE, vol. 20, 1932, p. 1962, https://doi.org/10.1109/JRPROC.1932.227481.