APA (7th ed.) Citation

Harker, K. J., & Crawford, F. W. (1968). Nonlinear interaction of cyclotron harmonic waves. Journal of Applied Physics, 39, 5959. https://doi.org/10.1063/1.1656098

Chicago Style (17th ed.) Citation

Harker, K. J., and F. W. Crawford. "Nonlinear Interaction of Cyclotron Harmonic Waves." Journal of Applied Physics 39 (1968): 5959. https://doi.org/10.1063/1.1656098.

MLA (9th ed.) Citation

Harker, K. J., and F. W. Crawford. "Nonlinear Interaction of Cyclotron Harmonic Waves." Journal of Applied Physics, vol. 39, 1968, p. 5959, https://doi.org/10.1063/1.1656098.