APA (7th ed.) Citation

Le Page, E. L., & Johnstone, B. M. (1975). An online sampled-data waveform control system. Medical and biological engineering, 13(5), 637. https://doi.org/10.1007/bf02477319

Chicago Style (17th ed.) Citation

Le Page, E. L., and B. M. Johnstone. "An Online Sampled-data Waveform Control System." Medical and Biological Engineering 13, no. 5 (1975): 637. https://doi.org/10.1007/bf02477319.

MLA (9th ed.) Citation

Le Page, E. L., and B. M. Johnstone. "An Online Sampled-data Waveform Control System." Medical and Biological Engineering, vol. 13, no. 5, 1975, p. 637, https://doi.org/10.1007/bf02477319.