APA (7th ed.) Citation

Ratcliffe, J. A. (1948). The physical principles of wireless (8th ed.). Methuen.

Chicago Style (17th ed.) Citation

Ratcliffe, J. A. The Physical Principles of Wireless. 8th ed. London: Methuen, 1948.

MLA (9th ed.) Citation

Ratcliffe, J. A. The Physical Principles of Wireless. 8th ed. Methuen, 1948.