APA (7th ed.) Citation

Davies, K. (1967). Ionospheric radio propagation. [P. Smith].

Chicago Style (17th ed.) Citation

Davies, Kenneth. Ionospheric Radio Propagation. [Place of publication not identified]: [P. Smith], 1967.

MLA (9th ed.) Citation

Davies, Kenneth. Ionospheric Radio Propagation. [P. Smith], 1967.