APA (7th ed.) Citation

Brown, O. F., & Gardiner, E. L. (1939). The elements of radio-communication (2d ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Brown, Oscar Frank, and Ernest L. Gardiner. The Elements of Radio-communication. 2d ed. London, New York: Oxford University Press, 1939.

MLA (9th ed.) Citation

Brown, Oscar Frank, and Ernest L. Gardiner. The Elements of Radio-communication. 2d ed. Oxford University Press, 1939.