APA (7th ed.) Citation

Simmonds, T. H. (1979). Evolution of the discrete crystal single-sideband selection filter in the Bell System. Proceedings of the IEEE, 67, 109.

Chicago Style (17th ed.) Citation

Simmonds, T. H. "Evolution of the Discrete Crystal Single-sideband Selection Filter in the Bell System." Proceedings of the IEEE 67 (1979): 109.

MLA (9th ed.) Citation

Simmonds, T. H. "Evolution of the Discrete Crystal Single-sideband Selection Filter in the Bell System." Proceedings of the IEEE, vol. 67, 1979, p. 109.