APA (7th ed.) Citation

Roder, H. (1931). Amplitude, phase, and frequency modulation. Proceedings of the IRE, 19, 2145. https://doi.org/10.1109/JRPROC.1931.222283

Chicago Style (17th ed.) Citation

Roder, H. "Amplitude, Phase, and Frequency Modulation." Proceedings of the IRE 19 (1931): 2145. https://doi.org/10.1109/JRPROC.1931.222283.

MLA (9th ed.) Citation

Roder, H. "Amplitude, Phase, and Frequency Modulation." Proceedings of the IRE, vol. 19, 1931, p. 2145, https://doi.org/10.1109/JRPROC.1931.222283.

Warning: These citations may not always be 100% accurate.